98978840 has 32 divisors (see below), whose sum is σ = 223086960. Its totient is φ = 39523200.

The previous prime is 98978837. The next prime is 98978857. The reversal of 98978840 is 4887989.

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, 25850 + ... + 29430.

Almost surely, 2^98978840 is an apocalyptic number.

It is an amenable number.

98978840 is an abundant number, since it is smaller than the sum of its proper divisors (124108120).

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

98978840 is a wasteful number, since it uses less digits than its factorization.

98978840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283 (or 4279 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 98978840 is about 9948.8109842332. The cubic root of 98978840 is about 462.5735398036.

The spelling of 98978840 in words is "ninety-eight million, nine hundred seventy-eight thousand, eight hundred forty".