156157972 has 24 divisors (see below), whose sum is σ = 280261184. Its totient is φ = 76108032.

The previous prime is 156157951. The next prime is 156157993. The reversal of 156157972 is 279751651.

It is an interprime number because it is at equal distance from previous prime (156157951) and next prime (156157993).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22993 + ... + 28999.

Almost surely, 2^156157972 is an apocalyptic number.

It is an amenable number.

156157972 is a deficient number, since it is larger than the sum of its proper divisors (124103212).

156157972 is a wasteful number, since it uses less digits than its factorization.

156157972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6175 (or 6173 counting only the distinct ones).

The product of its digits is 132300, while the sum is 43.

The square root of 156157972 is about 12496.3183378145. The cubic root of 156157972 is about 538.5029086393.

It can be divided in two parts, 1561579 and 72, that added together give a palindrome (1561651).

The spelling of 156157972 in words is "one hundred fifty-six million, one hundred fifty-seven thousand, nine hundred seventy-two".