28626684 has 24 divisors (see below), whose sum is σ = 66885840. Its totient is φ = 9529344.

The previous prime is 28626679. The next prime is 28626707. The reversal of 28626684 is 48662682.

It is a congruent number.

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, 12802 + ... + 14870.

It is an arithmetic number, because the mean of its divisors is an integer number (2786910).

Almost surely, 2^28626684 is an apocalyptic number.

It is an amenable number.

28626684 is an abundant number, since it is smaller than the sum of its proper divisors (38259156).

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

28626684 is a wasteful number, since it uses less digits than its factorization.

28626684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229 (or 3227 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 28626684 is about 5350.3910137484. The cubic root of 28626684 is about 305.9076572146.

The spelling of 28626684 in words is "twenty-eight million, six hundred twenty-six thousand, six hundred eighty-four".