650115128 has 32 divisors (see below), whose sum is σ = 1316330400. Its totient is φ = 299230848.

The previous prime is 650115107. The next prime is 650115149. The reversal of 650115128 is 821511056.

It is an interprime number because it is at equal distance from previous prime (650115107) and next prime (650115149).

It is a self number, because there is not a number n which added to its sum of digits gives 650115128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30413 + ... + 47171.

It is an arithmetic number, because the mean of its divisors is an integer number (41135325).

Almost surely, 2^650115128 is an apocalyptic number.

It is an amenable number.

650115128 is an abundant number, since it is smaller than the sum of its proper divisors (666215272).

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

650115128 is a wasteful number, since it uses less digits than its factorization.

650115128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17151 (or 17147 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 650115128 is about 25497.3553138360. The cubic root of 650115128 is about 866.2902450785.

The spelling of 650115128 in words is "six hundred fifty million, one hundred fifteen thousand, one hundred twenty-eight".