308872 has 8 divisors (see below), whose sum is σ = 579150. Its totient is φ = 154432.

The previous prime is 308857. The next prime is 308887. The reversal of 308872 is 278803.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (308857) and next prime (308887).

It can be written as a sum of positive squares in only one way, i.e., 285156 + 23716 = 534^2 + 154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 308872.

It is an unprimeable number.

308872 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19297 + ... + 19312.

2³⁰⁸⁸⁷² is an apocalyptic number.

It is an amenable number.

308872 is a deficient number, since it is larger than the sum of its proper divisors (270278).

308872 is a wasteful number, since it uses less digits than its factorization.

308872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38615 (or 38611 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 308872 is about 555.7625392198. The cubic root of 308872 is about 67.5968066836.

It can be divided in two parts, 3088 and 72, that added together give a triangular number (3160 = T₇₉).

The spelling of 308872 in words is "three hundred eight thousand, eight hundred seventy-two".