73382728 has 8 divisors (see below), whose sum is σ = 137592630. Its totient is φ = 36691360.

The previous prime is 73382723. The next prime is 73382741. The reversal of 73382728 is 82728337.

It can be written as a sum of positive squares in only one way, i.e., 42224004 + 31158724 = 6498^2 + 5582^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (73382723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4586413 + ... + 4586428.

Almost surely, 2^73382728 is an apocalyptic number.

It is an amenable number.

73382728 is a deficient number, since it is larger than the sum of its proper divisors (64209902).

73382728 is a wasteful number, since it uses less digits than its factorization.

73382728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9172847 (or 9172843 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 73382728 is about 8566.3719274848. The cubic root of 73382728 is about 418.6630350928.

The spelling of 73382728 in words is "seventy-three million, three hundred eighty-two thousand, seven hundred twenty-eight".