980128250 has 16 divisors (see below), whose sum is σ = 1834800552. Its totient is φ = 392051200.

The previous prime is 980128241. The next prime is 980128307. The reversal of 980128250 is 52821089.

It is a Cunningham number, because it is equal to 31307²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 121462441 + 858665809 = 11021^2 + 29303^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 980128250.

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, 1960007 + ... + 1960506.

Almost surely, 2^980128250 is an apocalyptic number.

980128250 is a deficient number, since it is larger than the sum of its proper divisors (854672302).

980128250 is a wasteful number, since it uses less digits than its factorization.

980128250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920530 (or 3920520 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 980128250 is about 31307.0000159709. Note that the first 4 decimals coincide. The cubic root of 980128250 is about 993.3317161613.

The spelling of 980128250 in words is "nine hundred eighty million, one hundred twenty-eight thousand, two hundred fifty".