156916240 has 40 divisors (see below), whose sum is σ = 392896728. Its totient is φ = 57937920.

The previous prime is 156916237. The next prime is 156916261. The reversal of 156916240 is 42619651.

It can be written as a sum of positive squares in 4 ways, for example, as 8271376 + 148644864 = 2876^2 + 12192^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 156916196 and 156916205.

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, 74401 + ... + 76480.

Almost surely, 2^156916240 is an apocalyptic number.

156916240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156916240 is an abundant number, since it is smaller than the sum of its proper divisors (235980488).

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

156916240 is a wasteful number, since it uses less digits than its factorization.

156916240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150907 (or 150901 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 156916240 is about 12526.6212523569. The cubic root of 156916240 is about 539.3731179893.

The spelling of 156916240 in words is "one hundred fifty-six million, nine hundred sixteen thousand, two hundred forty".