73120500 has 72 divisors (see below), whose sum is σ = 230685000. Its totient is φ = 19497600.

The previous prime is 73120499. The next prime is 73120591. The reversal of 73120500 is 502137.

It can be written as a sum of positive squares in 4 ways, for example, as 1954404 + 71166096 = 1398^2 + 8436^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3625 + ... + 12624.

Almost surely, 2^73120500 is an apocalyptic number.

It is an amenable number.

73120500 is an abundant number, since it is smaller than the sum of its proper divisors (157564500).

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

73120500 is a wasteful number, since it uses less digits than its factorization.

73120500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16274 (or 16259 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 73120500 is about 8551.0525667897. The cubic root of 73120500 is about 418.1637522985.

Adding to 73120500 its reverse (502137), we get a palindrome (73622637).

The spelling of 73120500 in words is "seventy-three million, one hundred twenty thousand, five hundred".