28733922 has 48 divisors (see below), whose sum is σ = 71914752. Its totient is φ = 8121600.

The previous prime is 28733899. The next prime is 28733951. The reversal of 28733922 is 22933782.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11047 + ... + 13397.

It is an arithmetic number, because the mean of its divisors is an integer number (1498224).

Almost surely, 2^28733922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28733922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35957376).

28733922 is an abundant number, since it is smaller than the sum of its proper divisors (43180830).

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

28733922 is a wasteful number, since it uses less digits than its factorization.

28733922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463 (or 2460 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 28733922 is about 5360.4031564799. The cubic root of 28733922 is about 306.2891666137.

The spelling of 28733922 in words is "twenty-eight million, seven hundred thirty-three thousand, nine hundred twenty-two".