98831640 has 64 divisors (see below), whose sum is σ = 298805760. Its totient is φ = 26149760.

The previous prime is 98831639. The next prime is 98831671. The reversal of 98831640 is 4613889.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12577 + ... + 18863.

It is an arithmetic number, because the mean of its divisors is an integer number (4668840).

Almost surely, 2^98831640 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 98831640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149402880).

98831640 is an abundant number, since it is smaller than the sum of its proper divisors (199974120).

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

98831640 is a wasteful number, since it uses less digits than its factorization.

98831640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432 (or 6428 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 98831640 is about 9941.4103627202. The cubic root of 98831640 is about 462.3441149839.

The spelling of 98831640 in words is "ninety-eight million, eight hundred thirty-one thousand, six hundred forty".