28766979 has 12 divisors (see below), whose sum is σ = 41601456. Its totient is φ = 19155312.

The previous prime is 28766971. The next prime is 28766989. The reversal of 28766979 is 97966782.

It is not a de Polignac number, because 28766979 - 2³ = 28766971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28766971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10242 + ... + 12744.

It is an arithmetic number, because the mean of its divisors is an integer number (3466788).

Almost surely, 2^28766979 is an apocalyptic number.

28766979 is a deficient number, since it is larger than the sum of its proper divisors (12834477).

28766979 is a wasteful number, since it uses less digits than its factorization.

28766979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786 (or 3783 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 28766979 is about 5363.4857136008. The cubic root of 28766979 is about 306.4065786013.

The spelling of 28766979 in words is "twenty-eight million, seven hundred sixty-six thousand, nine hundred seventy-nine".