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28853448 = 2331392479
BaseRepresentation
bin110111000010…
…0010011001000
32000021220111020
41232010103020
524341302243
62510232440
7500151561
oct156042310
960256436
1028853448
1115318028
1297b5720
135c93160
143b91168
1527ee283
hex1b844c8

28853448 has 32 divisors (see below), whose sum is σ = 77683200. Its totient is φ = 8877888.

The previous prime is 28853443. The next prime is 28853449. The reversal of 28853448 is 84435882.

It is a happy number.

It is a super-2 number, since 2×288534482 = 1665042922977408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28853443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45928 + ... + 46551.

It is an arithmetic number, because the mean of its divisors is an integer number (2427600).

Almost surely, 228853448 is an apocalyptic number.

It is an amenable number.

28853448 is an abundant number, since it is smaller than the sum of its proper divisors (48829752).

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

28853448 is a wasteful number, since it uses less digits than its factorization.

28853448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92501 (or 92497 counting only the distinct ones).

The product of its digits is 245760, while the sum is 42.

The square root of 28853448 is about 5371.5405611426. The cubic root of 28853448 is about 306.7132747896.

Subtracting from 28853448 its sum of digits (42), we obtain a triangular number (28853406 = T7596).

The spelling of 28853448 in words is "twenty-eight million, eight hundred fifty-three thousand, four hundred forty-eight".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 92479 184958 277437 369916 554874 739832 1109748 1202227 2219496 2404454 3606681 4808908 7213362 9617816 14426724 28853448