73270520 has 32 divisors (see below), whose sum is σ = 165730320. Its totient is φ = 29153280.

The previous prime is 73270511. The next prime is 73270523. The reversal of 73270520 is 2507237.

It is a self number, because there is not a number n which added to its sum of digits gives 73270520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73270523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2975 + ... + 12465.

Almost surely, 2^73270520 is an apocalyptic number.

It is an amenable number.

73270520 is an abundant number, since it is smaller than the sum of its proper divisors (92459800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73270520 is a wasteful number, since it uses less digits than its factorization.

73270520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9695 (or 9691 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 73270520 is about 8559.8200915673. The cubic root of 73270520 is about 418.4495365965.

Adding to 73270520 its reverse (2507237), we get a palindrome (75777757).

The spelling of 73270520 in words is "seventy-three million, two hundred seventy thousand, five hundred twenty".