28772968 has 32 divisors (see below), whose sum is σ = 62674560. Its totient is φ = 12127680.

The previous prime is 28772951. The next prime is 28772983. The reversal of 28772968 is 86927782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796 + ... + 7627.

It is an arithmetic number, because the mean of its divisors is an integer number (1958580).

Almost surely, 2^28772968 is an apocalyptic number.

28772968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28772968 is an abundant number, since it is smaller than the sum of its proper divisors (33901592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28772968 is a wasteful number, since it uses less digits than its factorization.

28772968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8497 (or 8493 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 28772968 is about 5364.0439968367. The cubic root of 28772968 is about 306.4278407304.

The spelling of 28772968 in words is "twenty-eight million, seven hundred seventy-two thousand, nine hundred sixty-eight".