73257136 has 10 divisors (see below), whose sum is σ = 141935732. Its totient is φ = 36628560.

The previous prime is 73257127. The next prime is 73257137. The reversal of 73257136 is 63175237.

73257136 is nontrivially palindromic in base 3.

It is not an unprimeable number, because it can be changed into a prime (73257137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2289270 + ... + 2289301.

Almost surely, 2^73257136 is an apocalyptic number.

It is an amenable number.

73257136 is a deficient number, since it is larger than the sum of its proper divisors (68678596).

73257136 is a wasteful number, since it uses less digits than its factorization.

73257136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578579 (or 4578573 counting only the distinct ones).

The product of its digits is 26460, while the sum is 34.

The square root of 73257136 is about 8559.0382637303. The cubic root of 73257136 is about 418.4240562731.

The spelling of 73257136 in words is "seventy-three million, two hundred fifty-seven thousand, one hundred thirty-six".