28634556 has 24 divisors (see below), whose sum is σ = 67298560. Its totient is φ = 9475632.

The previous prime is 28634533. The next prime is 28634561. The reversal of 28634556 is 65543682.

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, 6916 + ... + 10251.

Almost surely, 2^28634556 is an apocalyptic number.

It is an amenable number.

28634556 is an abundant number, since it is smaller than the sum of its proper divisors (38664004).

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

28634556 is a wasteful number, since it uses less digits than its factorization.

28634556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17313 (or 17311 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 28634556 is about 5351.1266103504. The cubic root of 28634556 is about 305.9356949756.

The spelling of 28634556 in words is "twenty-eight million, six hundred thirty-four thousand, five hundred fifty-six".