Search a number
-
+
48612990 = 2352971787
BaseRepresentation
bin1011100101110…
…0011001111110
310101110210111010
42321130121332
544421103430
64453540050
71130126556
oct271343176
9111423433
1048612990
1125493728
1214344626
13a0c0caa
146656166
154403cb0
hex2e5c67e

48612990 has 64 divisors (see below), whose sum is σ = 122549760. Its totient is φ = 12324480.

The previous prime is 48612983. The next prime is 48612997. The reversal of 48612990 is 9921684.

It is an interprime number because it is at equal distance from previous prime (48612983) and next prime (48612997).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48612997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61377 + ... + 62163.

It is an arithmetic number, because the mean of its divisors is an integer number (1914840).

Almost surely, 248612990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 48612990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61274880).

48612990 is an abundant number, since it is smaller than the sum of its proper divisors (73936770).

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

48612990 is a wasteful number, since it uses less digits than its factorization.

48612990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 48612990 is about 6972.3016285872. The cubic root of 48612990 is about 364.9646303376.

The spelling of 48612990 in words is "forty-eight million, six hundred twelve thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 10 15 29 30 58 71 87 142 145 174 213 290 355 426 435 710 787 870 1065 1574 2059 2130 2361 3935 4118 4722 6177 7870 10295 11805 12354 20590 22823 23610 30885 45646 55877 61770 68469 111754 114115 136938 167631 228230 279385 335262 342345 558770 684690 838155 1620433 1676310 3240866 4861299 8102165 9722598 16204330 24306495 48612990