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156512028 = 22313042669
BaseRepresentation
bin10010101010000…
…10111100011100
3101220111122010210
421111002330130
5310031341103
623310332420
73610221201
oct1125027434
9356448123
10156512028
118038a892
12444ba110
132656bc8a
1416b01ca8
15db18e03
hex9542f1c

156512028 has 12 divisors (see below), whose sum is σ = 365194760. Its totient is φ = 52170672.

The previous prime is 156512011. The next prime is 156512029. The reversal of 156512028 is 820215651.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 156511986 and 156512004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156512029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6521323 + ... + 6521346.

Almost surely, 2156512028 is an apocalyptic number.

It is an amenable number.

156512028 is an abundant number, since it is smaller than the sum of its proper divisors (208682732).

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

156512028 is a wasteful number, since it uses less digits than its factorization.

156512028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13042676 (or 13042674 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 156512028 is about 12510.4767295255. The cubic root of 156512028 is about 538.9095828774.

Adding to 156512028 its reverse (820215651), we get a palindrome (976727679).

The spelling of 156512028 in words is "one hundred fifty-six million, five hundred twelve thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 13042669 26085338 39128007 52170676 78256014 156512028