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449115472 = 2413237672
BaseRepresentation
bin11010110001001…
…111010101010000
31011022002102121101
4122301033111100
51404433143342
6112322034144
714062263361
oct3261172520
91138072541
10449115472
11210572113
121064a8954
137207a200
144390bb68
15296663b7
hex1ac4f550

449115472 has 90 divisors (see below), whose sum is σ = 982370718. Its totient is φ = 198671616.

The previous prime is 449115427. The next prime is 449115473. The reversal of 449115472 is 274511944.

It can be written as a sum of positive squares in 3 ways, for example, as 23270976 + 425844496 = 4824^2 + 20636^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449115473) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6703183 + ... + 6703249.

Almost surely, 2449115472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449115472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491185359).

449115472 is an abundant number, since it is smaller than the sum of its proper divisors (533255246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449115472 is a wasteful number, since it uses less digits than its factorization.

449115472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 119 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 449115472 is about 21192.3446555590. The cubic root of 449115472 is about 765.8070125800.

Subtracting from 449115472 its sum of digits (37), we obtain a triangular number (449115435 = T29970).

Multiplying 449115472 by its sum of digits (37), we get a square (16617272464 = 1289082).

449115472 divided by its sum of digits (37) gives a square (12138256 = 34842).

It can be divided in two parts, 449 and 115472, that added together give a triangular number (115921 = T481).

The spelling of 449115472 in words is "four hundred forty-nine million, one hundred fifteen thousand, four hundred seventy-two".

Divisors: 1 2 4 8 13 16 26 37 52 67 74 104 134 148 169 208 268 296 338 481 536 592 676 871 962 1072 1352 1742 1924 2479 2704 3484 3848 4489 4958 6253 6968 7696 8978 9916 11323 12506 13936 17956 19832 22646 25012 32227 35912 39664 45292 50024 58357 64454 71824 90584 100048 116714 128908 166093 181168 233428 257816 332186 418951 466856 515632 664372 758641 837902 933712 1328744 1517282 1675804 2159209 2657488 3034564 3351608 4318418 6069128 6703216 8636836 12138256 17273672 28069717 34547344 56139434 112278868 224557736 449115472