28545756 has 24 divisors (see below), whose sum is σ = 66791424. Its totient is φ = 9488880.

The previous prime is 28545749. The next prime is 28545767. The reversal of 28545756 is 65754582.

It is a super-2 number, since 2×28545756² = 1629720371223072, which contains 22 as substring.

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, 1491 + ... + 7701.

It is an arithmetic number, because the mean of its divisors is an integer number (2782976).

Almost surely, 2^28545756 is an apocalyptic number.

It is an amenable number.

28545756 is an abundant number, since it is smaller than the sum of its proper divisors (38245668).

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

28545756 is a wasteful number, since it uses less digits than its factorization.

28545756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6601 (or 6599 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 28545756 is about 5342.8228493934. The cubic root of 28545756 is about 305.6191168610.

The spelling of 28545756 in words is "twenty-eight million, five hundred forty-five thousand, seven hundred fifty-six".