308072 has 16 divisors (see below), whose sum is σ = 585060. Its totient is φ = 152064.

The previous prime is 308051. The next prime is 308081. The reversal of 308072 is 270803.

It can be written as a sum of positive squares in 2 ways, for example, as 306916 + 1156 = 554^2 + 34^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 308072.

It is an unprimeable number.

308072 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 in 3 ways as a sum of consecutive naturals, for example, 578 + ... + 974.

2³⁰⁸⁰⁷² is an apocalyptic number.

It is an amenable number.

308072 is a deficient number, since it is larger than the sum of its proper divisors (276988).

308072 is a wasteful number, since it uses less digits than its factorization.

308072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 308072 is about 555.0423407273. The cubic root of 308072 is about 67.5383960791.

Adding to 308072 its reverse (270803), we get a palindrome (578875).

The spelling of 308072 in words is "three hundred eight thousand, seventy-two".