28879704 has 48 divisors (see below), whose sum is σ = 89391120. Its totient is φ = 8251200.

The previous prime is 28879691. The next prime is 28879709. The reversal of 28879704 is 40797882.

It is a self number, because there is not a number n which added to its sum of digits gives 28879704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28879709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28147 + ... + 29154.

It is an arithmetic number, because the mean of its divisors is an integer number (1862315).

Almost surely, 2^28879704 is an apocalyptic number.

28879704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28879704 is an abundant number, since it is smaller than the sum of its proper divisors (60511416).

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

28879704 is a wasteful number, since it uses less digits than its factorization.

28879704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57320 (or 57313 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 28879704 is about 5373.9839969989. The cubic root of 28879704 is about 306.8062806847.

The spelling of 28879704 in words is "twenty-eight million, eight hundred seventy-nine thousand, seven hundred four".