28607388 has 24 divisors (see below), whose sum is σ = 70264320. Its totient is φ = 9033840.

The previous prime is 28607351. The next prime is 28607417. The reversal of 28607388 is 88370682.

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, 62508 + ... + 62963.

It is an arithmetic number, because the mean of its divisors is an integer number (2927680).

Almost surely, 2^28607388 is an apocalyptic number.

It is an amenable number.

28607388 is an abundant number, since it is smaller than the sum of its proper divisors (41656932).

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

28607388 is a wasteful number, since it uses less digits than its factorization.

28607388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125497 (or 125495 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 28607388 is about 5348.5874770822. The cubic root of 28607388 is about 305.8389087592.

The spelling of 28607388 in words is "twenty-eight million, six hundred seven thousand, three hundred eighty-eight".