308972 has 6 divisors (see below), whose sum is σ = 540708. Its totient is φ = 154484.

The previous prime is 308951. The next prime is 308989. The reversal of 308972 is 279803.

308972 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 13.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 38618 + ... + 38625.

It is an arithmetic number, because the mean of its divisors is an integer number (90118).

2³⁰⁸⁹⁷² is an apocalyptic number.

It is an amenable number.

308972 is a deficient number, since it is larger than the sum of its proper divisors (231736).

308972 is a wasteful number, since it uses less digits than its factorization.

308972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77247 (or 77245 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 308972 is about 555.8524984202. The cubic root of 308972 is about 67.6041009148.

The spelling of 308972 in words is "three hundred eight thousand, nine hundred seventy-two".