98257640 has 32 divisors (see below), whose sum is σ = 238087080. Its totient is φ = 36279552.

The previous prime is 98257639. The next prime is 98257657. The reversal of 98257640 is 4675289.

It can be written as a sum of positive squares in 4 ways, for example, as 54671236 + 43586404 = 7394^2 + 6602^2 .

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, 93959 + ... + 94998.

Almost surely, 2^98257640 is an apocalyptic number.

It is an amenable number.

98257640 is an abundant number, since it is smaller than the sum of its proper divisors (139829440).

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

98257640 is a wasteful number, since it uses less digits than its factorization.

98257640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188981 (or 188977 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 98257640 is about 9912.4991803278. The cubic root of 98257640 is about 461.4473004285.

The spelling of 98257640 in words is "ninety-eight million, two hundred fifty-seven thousand, six hundred forty".