28733172 has 24 divisors (see below), whose sum is σ = 72201696. Its totient is φ = 8840928.

The previous prime is 28733167. The next prime is 28733191. The reversal of 28733172 is 27133782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91938 + ... + 92249.

It is an arithmetic number, because the mean of its divisors is an integer number (3008404).

Almost surely, 2^28733172 is an apocalyptic number.

It is an amenable number.

28733172 is an abundant number, since it is smaller than the sum of its proper divisors (43468524).

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

28733172 is a wasteful number, since it uses less digits than its factorization.

28733172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184207 (or 184205 counting only the distinct ones).

The product of its digits is 14112, while the sum is 33.

The square root of 28733172 is about 5360.3331985988. Note that the first 3 decimals coincide. The cubic root of 28733172 is about 306.2865017161.

The spelling of 28733172 in words is "twenty-eight million, seven hundred thirty-three thousand, one hundred seventy-two".