28329579 has 12 divisors (see below), whose sum is σ = 41791776. Its totient is φ = 18484272.

The previous prime is 28329557. The next prime is 28329649. The reversal of 28329579 is 97592382.

It is not a de Polignac number, because 28329579 - 2⁵ = 28329547 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28329079) 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, 33064 + ... + 33909.

It is an arithmetic number, because the mean of its divisors is an integer number (3482648).

Almost surely, 2^28329579 is an apocalyptic number.

28329579 is a deficient number, since it is larger than the sum of its proper divisors (13462197).

28329579 is a wasteful number, since it uses less digits than its factorization.

28329579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67026 (or 67023 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 28329579 is about 5322.5538043312. The cubic root of 28329579 is about 304.8456766544.

The spelling of 28329579 in words is "twenty-eight million, three hundred twenty-nine thousand, five hundred seventy-nine".