73130180 has 12 divisors (see below), whose sum is σ = 153573420. Its totient is φ = 29252064.

The previous prime is 73130153. The next prime is 73130191. The reversal of 73130180 is 8103137.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14638276 + 58491904 = 3826^2 + 7648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1828235 + ... + 1828274.

It is an arithmetic number, because the mean of its divisors is an integer number (12797785).

Almost surely, 2^73130180 is an apocalyptic number.

It is an amenable number.

73130180 is an abundant number, since it is smaller than the sum of its proper divisors (80443240).

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

73130180 is a wasteful number, since it uses less digits than its factorization.

73130180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656518 (or 3656516 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 73130180 is about 8551.6185602493. The cubic root of 73130180 is about 418.1822042444.

The spelling of 73130180 in words is "seventy-three million, one hundred thirty thousand, one hundred eighty".