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70157152 = 25131371231
BaseRepresentation
bin1000010111010…
…00001101100000
311220000100112001
410023220031200
5120430012102
610543413344
71511216542
oct413501540
9156010461
1070157152
113666911a
121b5b4254
13116c5210
149463692
15625c487
hex42e8360

70157152 has 48 divisors (see below), whose sum is σ = 149954112. Its totient is φ = 32117760.

The previous prime is 70157149. The next prime is 70157173. The reversal of 70157152 is 25175107.

It is a super-2 number, since 2×701571522 = 9844051953502208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70157152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56377 + ... + 57607.

It is an arithmetic number, because the mean of its divisors is an integer number (3124044).

Almost surely, 270157152 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 70157152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74977056).

70157152 is an abundant number, since it is smaller than the sum of its proper divisors (79796960).

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

70157152 is a wasteful number, since it uses less digits than its factorization.

70157152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 70157152 is about 8375.9866284516. The cubic root of 70157152 is about 412.4367129109.

The spelling of 70157152 in words is "seventy million, one hundred fifty-seven thousand, one hundred fifty-two".

Divisors: 1 2 4 8 13 16 26 32 52 104 137 208 274 416 548 1096 1231 1781 2192 2462 3562 4384 4924 7124 9848 14248 16003 19696 28496 32006 39392 56992 64012 128024 168647 256048 337294 512096 674588 1349176 2192411 2698352 4384822 5396704 8769644 17539288 35078576 70157152