156216540 has 48 divisors (see below), whose sum is σ = 440576640. Its totient is φ = 41355840.

The previous prime is 156216521. The next prime is 156216559. The reversal of 156216540 is 45612651.

It is an interprime number because it is at equal distance from previous prime (156216521) and next prime (156216559).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 156216498 and 156216507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026 + ... + 17705.

It is an arithmetic number, because the mean of its divisors is an integer number (9178680).

Almost surely, 2^156216540 is an apocalyptic number.

156216540 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 156216540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220288320).

156216540 is an abundant number, since it is smaller than the sum of its proper divisors (284360100).

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

156216540 is a wasteful number, since it uses less digits than its factorization.

156216540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18882 (or 18880 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 156216540 is about 12498.6615283397. The cubic root of 156216540 is about 538.5702231581.

The spelling of 156216540 in words is "one hundred fifty-six million, two hundred sixteen thousand, five hundred forty".