306889864 has 16 divisors (see below), whose sum is σ = 579620700. Its totient is φ = 152324352.

The previous prime is 306889859. The next prime is 306889867. The reversal of 306889864 is 468988603.

It can be written as a sum of positive squares in 2 ways, for example, as 266668900 + 40220964 = 16330^2 + 6342^2 .

It is not an unprimeable number, because it can be changed into a prime (306889867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138909 + ... + 141100.

Almost surely, 2^306889864 is an apocalyptic number.

It is an amenable number.

306889864 is a deficient number, since it is larger than the sum of its proper divisors (272730836).

306889864 is a wasteful number, since it uses less digits than its factorization.

306889864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280152 (or 280148 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 52.

The square root of 306889864 is about 17518.2722892413. The cubic root of 306889864 is about 674.5189908275.

The spelling of 306889864 in words is "three hundred six million, eight hundred eighty-nine thousand, eight hundred sixty-four".