156442986 has 48 divisors (see below), whose sum is σ = 395304000. Its totient is φ = 44696232.

The previous prime is 156442973. The next prime is 156442991. The reversal of 156442986 is 689244651.

156442986 is a `hidden beast` number, since 1 + 564 + 4 + 2 + 9 + 86 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6496 + ... + 18843.

It is an arithmetic number, because the mean of its divisors is an integer number (8235500).

Almost surely, 2^156442986 is an apocalyptic number.

156442986 is an abundant number, since it is smaller than the sum of its proper divisors (238861014).

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

156442986 is a wasteful number, since it uses less digits than its factorization.

156442986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25368 (or 25351 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 156442986 is about 12507.7170578807. The cubic root of 156442986 is about 538.8303283342.

The spelling of 156442986 in words is "one hundred fifty-six million, four hundred forty-two thousand, nine hundred eighty-six".