28923552 has 72 divisors (see below), whose sum is σ = 94008096. Its totient is φ = 8263296.

The previous prime is 28923547. The next prime is 28923569. The reversal of 28923552 is 25532982.

28923552 is a `hidden beast` number, since 2 + 89 + 23 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5158 + ... + 9189.

It is an arithmetic number, because the mean of its divisors is an integer number (1305668).

Almost surely, 2^28923552 is an apocalyptic number.

It is an amenable number.

28923552 is an abundant number, since it is smaller than the sum of its proper divisors (65084544).

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

28923552 is a wasteful number, since it uses less digits than its factorization.

28923552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14370 (or 14359 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 28923552 is about 5378.0621045131. The cubic root of 28923552 is about 306.9614766319.

The spelling of 28923552 in words is "twenty-eight million, nine hundred twenty-three thousand, five hundred fifty-two".