155432732 has 24 divisors (see below), whose sum is σ = 334778976. Its totient is φ = 61489728.

The previous prime is 155432723. The next prime is 155432843. The reversal of 155432732 is 237234551.

155432732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213143 + ... + 213870.

It is an arithmetic number, because the mean of its divisors is an integer number (13949124).

Almost surely, 2^155432732 is an apocalyptic number.

It is an amenable number.

155432732 is an abundant number, since it is smaller than the sum of its proper divisors (179346244).

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

155432732 is a wasteful number, since it uses less digits than its factorization.

155432732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427037 (or 427035 counting only the distinct ones).

The product of its digits is 25200, while the sum is 32.

The square root of 155432732 is about 12467.2664205110. The cubic root of 155432732 is about 537.6679635162.

The spelling of 155432732 in words is "one hundred fifty-five million, four hundred thirty-two thousand, seven hundred thirty-two".