155985632 has 48 divisors (see below), whose sum is σ = 349598592. Its totient is φ = 67816320.

The previous prime is 155985631. The next prime is 155985637. The reversal of 155985632 is 236589551.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155985631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1538 + ... + 17729.

It is an arithmetic number, because the mean of its divisors is an integer number (7283304).

Almost surely, 2^155985632 is an apocalyptic number.

It is an amenable number.

155985632 is an abundant number, since it is smaller than the sum of its proper divisors (193612960).

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

155985632 is a wasteful number, since it uses less digits than its factorization.

155985632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19311 (or 19303 counting only the distinct ones).

The product of its digits is 324000, while the sum is 44.

The square root of 155985632 is about 12489.4208032238. The cubic root of 155985632 is about 538.3047337785.

The spelling of 155985632 in words is "one hundred fifty-five million, nine hundred eighty-five thousand, six hundred thirty-two".