98131440 has 80 divisors (see below), whose sum is σ = 331871616. Its totient is φ = 23788800.

The previous prime is 98131433. The next prime is 98131487. The reversal of 98131440 is 4413189.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 98131398 and 98131407.

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, 15946 + ... + 21225.

Almost surely, 2^98131440 is an apocalyptic number.

It is an amenable number.

98131440 is an abundant number, since it is smaller than the sum of its proper divisors (233740176).

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

98131440 is a wasteful number, since it uses less digits than its factorization.

98131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37198 (or 37192 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 98131440 is about 9906.1314346217. The cubic root of 98131440 is about 461.2496581251.

The spelling of 98131440 in words is "ninety-eight million, one hundred thirty-one thousand, four hundred forty".