73507136 has 14 divisors (see below), whose sum is σ = 145865850. Its totient is φ = 36753536.

The previous prime is 73507121. The next prime is 73507139. The reversal of 73507136 is 63170537.

It can be written as a sum of positive squares in only one way, i.e., 66324736 + 7182400 = 8144^2 + 2680^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73507139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574211 + ... + 574338.

Almost surely, 2^73507136 is an apocalyptic number.

It is an amenable number.

73507136 is a deficient number, since it is larger than the sum of its proper divisors (72358714).

73507136 is a wasteful number, since it uses less digits than its factorization.

73507136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148561 (or 1148551 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 73507136 is about 8573.6302696116. The cubic root of 73507136 is about 418.8994923000.

The spelling of 73507136 in words is "seventy-three million, five hundred seven thousand, one hundred thirty-six".