73438828 has 12 divisors (see below), whose sum is σ = 128779000. Its totient is φ = 36644832.

The previous prime is 73438823. The next prime is 73438847. The reversal of 73438828 is 82883437.

It is a super-2 number, since 2×73438828² = 10786522916027168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73438823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16401 + ... + 20392.

Almost surely, 2^73438828 is an apocalyptic number.

It is an amenable number.

73438828 is a deficient number, since it is larger than the sum of its proper divisors (55340172).

73438828 is a wasteful number, since it uses less digits than its factorization.

73438828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37296 (or 37294 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 73438828 is about 8569.6457336345. The cubic root of 73438828 is about 418.7696951307.

The spelling of 73438828 in words is "seventy-three million, four hundred thirty-eight thousand, eight hundred twenty-eight".