155964012 has 72 divisors (see below), whose sum is σ = 386480640. Its totient is φ = 48940320.

The previous prime is 155963993. The next prime is 155964013. The reversal of 155964012 is 210469551.

155964012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155964012² = 48649546078272288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155964013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 501337 + ... + 501647.

Almost surely, 2^155964012 is an apocalyptic number.

155964012 is a gapful number since it is divisible by the number (12) 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 155964012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193240320).

155964012 is an abundant number, since it is smaller than the sum of its proper divisors (230516628).

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

155964012 is a wasteful number, since it uses less digits than its factorization.

155964012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 155964012 is about 12488.5552406994. Note that the first 3 decimals coincide. The cubic root of 155964012 is about 538.2798625004.

The spelling of 155964012 in words is "one hundred fifty-five million, nine hundred sixty-four thousand, twelve".