28662556 has 48 divisors (see below), whose sum is σ = 56800800. Its totient is φ = 12563712.

The previous prime is 28662521. The next prime is 28662587. The reversal of 28662556 is 65526682.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125050 + ... + 125278.

It is an arithmetic number, because the mean of its divisors is an integer number (1183350).

Almost surely, 2^28662556 is an apocalyptic number.

28662556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28662556 is a deficient number, since it is larger than the sum of its proper divisors (28138244).

28662556 is a wasteful number, since it uses less digits than its factorization.

28662556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 356 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 28662556 is about 5353.7422425814. The cubic root of 28662556 is about 306.0353811596.

The spelling of 28662556 in words is "twenty-eight million, six hundred sixty-two thousand, five hundred fifty-six".