28552979 has 16 divisors (see below), whose sum is σ = 37211328. Its totient is φ = 21261312.

The previous prime is 28552973. The next prime is 28552981. The reversal of 28552979 is 97925582.

It is a cyclic number.

It is not a de Polignac number, because 28552979 - 2¹⁶ = 28487443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28552973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7682 + ... + 10775.

It is an arithmetic number, because the mean of its divisors is an integer number (2325708).

Almost surely, 2^28552979 is an apocalyptic number.

28552979 is a deficient number, since it is larger than the sum of its proper divisors (8658349).

28552979 is a wasteful number, since it uses less digits than its factorization.

28552979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18494.

The product of its digits is 453600, while the sum is 47.

The square root of 28552979 is about 5343.4987601758. The cubic root of 28552979 is about 305.6448918626.

The spelling of 28552979 in words is "twenty-eight million, five hundred fifty-two thousand, nine hundred seventy-nine".