28669964 has 6 divisors (see below), whose sum is σ = 50172444. Its totient is φ = 14334980.

The previous prime is 28669919. The next prime is 28669967. The reversal of 28669964 is 46996682.

It is a super-2 number, since 2×28669964² = 1643933671522592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28669967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3583742 + ... + 3583749.

It is an arithmetic number, because the mean of its divisors is an integer number (8362074).

Almost surely, 2^28669964 is an apocalyptic number.

It is an amenable number.

28669964 is a deficient number, since it is larger than the sum of its proper divisors (21502480).

28669964 is a wasteful number, since it uses less digits than its factorization.

28669964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7167495 (or 7167493 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 28669964 is about 5354.4340503923. The cubic root of 28669964 is about 306.0617444146.

The spelling of 28669964 in words is "twenty-eight million, six hundred sixty-nine thousand, nine hundred sixty-four".