650115172 has 48 divisors (see below), whose sum is σ = 1394547840. Its totient is φ = 258964992.

The previous prime is 650115163. The next prime is 650115187. The reversal of 650115172 is 271511056.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 650115172.

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, 16668 + ... + 39724.

It is an arithmetic number, because the mean of its divisors is an integer number (29053080).

Almost surely, 2^650115172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 650115172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697273920).

650115172 is an abundant number, since it is smaller than the sum of its proper divisors (744432668).

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

650115172 is a wasteful number, since it uses less digits than its factorization.

650115172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23140 (or 23138 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 650115172 is about 25497.3561766706. The cubic root of 650115172 is about 866.2902646221.

The spelling of 650115172 in words is "six hundred fifty million, one hundred fifteen thousand, one hundred seventy-two".