156120780 has 48 divisors (see below), whose sum is σ = 456148224. Its totient is φ = 39821760.

The previous prime is 156120779. The next prime is 156120781. The reversal of 156120780 is 87021651.

156120780 is digitally balanced in base 2 and base 3, because in such bases 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 (156120779) and next prime (156120781).

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

It is not an unprimeable number, because it can be changed into a prime (156120781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55186 + ... + 57945.

It is an arithmetic number, because the mean of its divisors is an integer number (9503088).

Almost surely, 2^156120780 is an apocalyptic number.

156120780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156120780 is an abundant number, since it is smaller than the sum of its proper divisors (300027444).

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

156120780 is a wasteful number, since it uses less digits than its factorization.

156120780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113166 (or 113164 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 156120780 is about 12494.8301308981. The cubic root of 156120780 is about 538.4601536647.

The spelling of 156120780 in words is "one hundred fifty-six million, one hundred twenty thousand, seven hundred eighty".