73131788 has 6 divisors (see below), whose sum is σ = 127980636. Its totient is φ = 36565892.

The previous prime is 73131787. The next prime is 73131791. The reversal of 73131788 is 88713137.

It is not an unprimeable number, because it can be changed into a prime (73131787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9141470 + ... + 9141477.

It is an arithmetic number, because the mean of its divisors is an integer number (21330106).

Almost surely, 2^73131788 is an apocalyptic number.

It is an amenable number.

73131788 is a deficient number, since it is larger than the sum of its proper divisors (54848848).

73131788 is a wasteful number, since it uses less digits than its factorization.

73131788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18282951 (or 18282949 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 73131788 is about 8551.7125770222. The cubic root of 73131788 is about 418.1852692446.

The spelling of 73131788 in words is "seventy-three million, one hundred thirty-one thousand, seven hundred eighty-eight".