156996840 has 256 divisors, whose sum is σ = 632862720. Its totient is φ = 30090240.

The previous prime is 156996839. The next prime is 156996841. The reversal of 156996840 is 48699651.

156996840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (156996839) and next prime (156996841).

It is a self number, because there is not a number n which added to its sum of digits gives 156996840.

It is not an unprimeable number, because it can be changed into a prime (156996841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 119467 + ... + 120773.

It is an arithmetic number, because the mean of its divisors is an integer number (2472120).

Almost surely, 2^156996840 is an apocalyptic number.

156996840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156996840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316431360).

156996840 is an abundant number, since it is smaller than the sum of its proper divisors (475865880).

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

156996840 is a wasteful number, since it uses less digits than its factorization.

156996840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 156996840 is about 12529.8379877794. The cubic root of 156996840 is about 539.4654518188.

The spelling of 156996840 in words is "one hundred fifty-six million, nine hundred ninety-six thousand, eight hundred forty".