156567138 has 32 divisors (see below), whose sum is σ = 385397376. Its totient is φ = 41292288.

The previous prime is 156567137. The next prime is 156567209. The reversal of 156567138 is 831765651.

It is a super-2 number, since 2×156567138² = 49026537403022088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 156567138.

It is not an unprimeable number, because it can be changed into a prime (156567137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142831 + ... + 143922.

It is an arithmetic number, because the mean of its divisors is an integer number (12043668).

Almost surely, 2^156567138 is an apocalyptic number.

156567138 is an abundant number, since it is smaller than the sum of its proper divisors (228830238).

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

156567138 is a wasteful number, since it uses less digits than its factorization.

156567138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286778.

The product of its digits is 151200, while the sum is 42.

The square root of 156567138 is about 12512.6790896274. The cubic root of 156567138 is about 538.9728279036.

The spelling of 156567138 in words is "one hundred fifty-six million, five hundred sixty-seven thousand, one hundred thirty-eight".