28745776 has 20 divisors (see below), whose sum is σ = 58971672. Its totient is φ = 13527296.

The previous prime is 28745771. The next prime is 28745777. The reversal of 28745776 is 67754782.

It is not an unprimeable number, because it can be changed into a prime (28745771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52570 + ... + 53113.

Almost surely, 2^28745776 is an apocalyptic number.

It is an amenable number.

28745776 is an abundant number, since it is smaller than the sum of its proper divisors (30225896).

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

28745776 is a wasteful number, since it uses less digits than its factorization.

28745776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105708 (or 105702 counting only the distinct ones).

The product of its digits is 658560, while the sum is 46.

The square root of 28745776 is about 5361.5087428820. The cubic root of 28745776 is about 306.3312800503.

The spelling of 28745776 in words is "twenty-eight million, seven hundred forty-five thousand, seven hundred seventy-six".