872180730 has 32 divisors (see below), whose sum is σ = 2325816000. Its totient is φ = 232581456.

The previous prime is 872180719. The next prime is 872180783. The reversal of 872180730 is 37081278.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1614880 + ... + 1615419.

It is an arithmetic number, because the mean of its divisors is an integer number (72681750).

Almost surely, 2^872180730 is an apocalyptic number.

872180730 is an abundant number, since it is smaller than the sum of its proper divisors (1453635270).

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

872180730 is a wasteful number, since it uses less digits than its factorization.

872180730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230315 (or 3230309 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 872180730 is about 29532.7061069588. The cubic root of 872180730 is about 955.4372347988.

The spelling of 872180730 in words is "eight hundred seventy-two million, one hundred eighty thousand, seven hundred thirty".