73813988 has 6 divisors (see below), whose sum is σ = 129174486. Its totient is φ = 36906992.

The previous prime is 73813979. The next prime is 73813997. The reversal of 73813988 is 88931837.

It is an interprime number because it is at equal distance from previous prime (73813979) and next prime (73813997).

It can be written as a sum of positive squares in only one way, i.e., 37356544 + 36457444 = 6112^2 + 6038^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9226745 + ... + 9226752.

It is an arithmetic number, because the mean of its divisors is an integer number (21529081).

Almost surely, 2^73813988 is an apocalyptic number.

It is an amenable number.

73813988 is a deficient number, since it is larger than the sum of its proper divisors (55360498).

73813988 is a wasteful number, since it uses less digits than its factorization.

73813988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18453501 (or 18453499 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 73813988 is about 8591.5067363065. The cubic root of 73813988 is about 419.4815750115.

The spelling of 73813988 in words is "seventy-three million, eight hundred thirteen thousand, nine hundred eighty-eight".