28732044 has 24 divisors (see below), whose sum is σ = 73136448. Its totient is φ = 8706640.

The previous prime is 28732031. The next prime is 28732049. The reversal of 28732044 is 44023782.

It is not an unprimeable number, because it can be changed into a prime (28732049) by changing a digit.

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, 108702 + ... + 108965.

It is an arithmetic number, because the mean of its divisors is an integer number (3047352).

Almost surely, 2^28732044 is an apocalyptic number.

It is an amenable number.

28732044 is an abundant number, since it is smaller than the sum of its proper divisors (44404404).

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

28732044 is a wasteful number, since it uses less digits than its factorization.

28732044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217685 (or 217683 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 28732044 is about 5360.2279802262. The cubic root of 28732044 is about 306.2824936229.

The spelling of 28732044 in words is "twenty-eight million, seven hundred thirty-two thousand, forty-four".