98818638 has 64 divisors (see below), whose sum is σ = 213276672. Its totient is φ = 30464640.

The previous prime is 98818633. The next prime is 98818667. The reversal of 98818638 is 83681889.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98818633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571120 + ... + 571292.

It is an arithmetic number, because the mean of its divisors is an integer number (3332448).

Almost surely, 2^98818638 is an apocalyptic number.

98818638 is an abundant number, since it is smaller than the sum of its proper divisors (114458034).

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

98818638 is a wasteful number, since it uses less digits than its factorization.

98818638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329.

The product of its digits is 663552, while the sum is 51.

The square root of 98818638 is about 9940.7564098513. The cubic root of 98818638 is about 462.3238392173.

The spelling of 98818638 in words is "ninety-eight million, eight hundred eighteen thousand, six hundred thirty-eight".