28548972 has 36 divisors (see below), whose sum is σ = 72501520. Its totient is φ = 9472032.

The previous prime is 28548959. The next prime is 28548977. The reversal of 28548972 is 27984582.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (28548977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6513 + ... + 9975.

Almost surely, 2^28548972 is an apocalyptic number.

It is an amenable number.

28548972 is an abundant number, since it is smaller than the sum of its proper divisors (43952548).

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

28548972 is a wasteful number, since it uses less digits than its factorization.

28548972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702 (or 3697 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 28548972 is about 5343.1238054157. The cubic root of 28548972 is about 305.6305935720.

The spelling of 28548972 in words is "twenty-eight million, five hundred forty-eight thousand, nine hundred seventy-two".