28900472 has 32 divisors (see below), whose sum is σ = 57380400. Its totient is φ = 13622784.

The previous prime is 28900447. The next prime is 28900477. The reversal of 28900472 is 27400982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28900477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8528 + ... + 11424.

Almost surely, 2^28900472 is an apocalyptic number.

It is an amenable number.

28900472 is a deficient number, since it is larger than the sum of its proper divisors (28479928).

28900472 is a wasteful number, since it uses less digits than its factorization.

28900472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28900472 is about 5375.9159219616. The cubic root of 28900472 is about 306.8798066702.

The spelling of 28900472 in words is "twenty-eight million, nine hundred thousand, four hundred seventy-two".