28455712 has 24 divisors (see below), whose sum is σ = 56198016. Its totient is φ = 14183232.

The previous prime is 28455667. The next prime is 28455719. The reversal of 28455712 is 21755482.

It is a happy number.

Its product of digits (22400) is a multiple of the sum of its prime factors (2800).

It is not an unprimeable number, because it can be changed into a prime (28455719) 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, 10533 + ... + 12955.

It is an arithmetic number, because the mean of its divisors is an integer number (2341584).

Almost surely, 2^28455712 is an apocalyptic number.

It is an amenable number.

28455712 is a deficient number, since it is larger than the sum of its proper divisors (27742304).

28455712 is a wasteful number, since it uses less digits than its factorization.

28455712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800 (or 2792 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 28455712 is about 5334.3895620774. The cubic root of 28455712 is about 305.2974326870.

The spelling of 28455712 in words is "twenty-eight million, four hundred fifty-five thousand, seven hundred twelve".