98131920 has 80 divisors (see below), whose sum is σ = 309242112. Its totient is φ = 25735680.

The previous prime is 98131919. The next prime is 98131931. The reversal of 98131920 is 2913189.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 11289 + ... + 17991.

Almost surely, 2^98131920 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 98131920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154621056).

98131920 is an abundant number, since it is smaller than the sum of its proper divisors (211110192).

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

98131920 is a wasteful number, since it uses less digits than its factorization.

98131920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6780 (or 6774 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 98131920 is about 9906.1556620114. The cubic root of 98131920 is about 461.2504101758.

The spelling of 98131920 in words is "ninety-eight million, one hundred thirty-one thousand, nine hundred twenty".