28662968 has 16 divisors (see below), whose sum is σ = 56080080. Its totient is φ = 13708288.

The previous prime is 28662947. The next prime is 28662973. The reversal of 28662968 is 86926682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77705 + ... + 78072.

It is an arithmetic number, because the mean of its divisors is an integer number (3505005).

Almost surely, 2^28662968 is an apocalyptic number.

It is an amenable number.

28662968 is a deficient number, since it is larger than the sum of its proper divisors (27417112).

28662968 is a wasteful number, since it uses less digits than its factorization.

28662968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155806 (or 155802 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 28662968 is about 5353.7807202014. The cubic root of 28662968 is about 306.0368474858.

The spelling of 28662968 in words is "twenty-eight million, six hundred sixty-two thousand, nine hundred sixty-eight".