156240940 has 24 divisors (see below), whose sum is σ = 331358832. Its totient is φ = 61876800.

The previous prime is 156240913. The next prime is 156240941. The reversal of 156240940 is 49042651.

It is a super-2 number, since 2×156240940² = 48822462664167200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (156240941) 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, 36654 + ... + 40693.

It is an arithmetic number, because the mean of its divisors is an integer number (13806618).

Almost surely, 2^156240940 is an apocalyptic number.

156240940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156240940 is an abundant number, since it is smaller than the sum of its proper divisors (175117892).

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

156240940 is a wasteful number, since it uses less digits than its factorization.

156240940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77457 (or 77455 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 156240940 is about 12499.6375947465. The cubic root of 156240940 is about 538.5982620783.

The spelling of 156240940 in words is "one hundred fifty-six million, two hundred forty thousand, nine hundred forty".