98791980 has 96 divisors (see below), whose sum is σ = 327075840. Its totient is φ = 21799680.

The previous prime is 98791967. The next prime is 98791991. The reversal of 98791980 is 8919789.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8125 + ... + 16235.

It is an arithmetic number, because the mean of its divisors is an integer number (3407040).

Almost surely, 2^98791980 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 98791980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163537920).

98791980 is an abundant number, since it is smaller than the sum of its proper divisors (228283860).

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

98791980 is a wasteful number, since it uses less digits than its factorization.

98791980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8159 (or 8157 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 51.

The square root of 98791980 is about 9939.4154757712. The cubic root of 98791980 is about 462.2822622517.

The spelling of 98791980 in words is "ninety-eight million, seven hundred ninety-one thousand, nine hundred eighty".