28733672 has 32 divisors (see below), whose sum is σ = 62233920. Its totient is φ = 12291840.

The previous prime is 28733657. The next prime is 28733699. The reversal of 28733672 is 27633782.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8108 + ... + 11099.

It is an arithmetic number, because the mean of its divisors is an integer number (1944810).

Almost surely, 2^28733672 is an apocalyptic number.

28733672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28733672 is an abundant number, since it is smaller than the sum of its proper divisors (33500248).

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

28733672 is a wasteful number, since it uses less digits than its factorization.

28733672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19241 (or 19237 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

The square root of 28733672 is about 5360.3798372877. The cubic root of 28733672 is about 306.2882783196.

The spelling of 28733672 in words is "twenty-eight million, seven hundred thirty-three thousand, six hundred seventy-two".