98644320 has 144 divisors (see below), whose sum is σ = 342446832. Its totient is φ = 25850880.

The previous prime is 98644303. The next prime is 98644321. The reversal of 98644320 is 2344689.

It is a happy number.

98644320 is a `hidden beast` number, since 9 + 8 + 644 + 3 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98644321) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 87279 + ... + 88401.

It is an arithmetic number, because the mean of its divisors is an integer number (2378103).

Almost surely, 2^98644320 is an apocalyptic number.

98644320 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98644320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171223416).

98644320 is an abundant number, since it is smaller than the sum of its proper divisors (243802512).

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

98644320 is a wasteful number, since it uses less digits than its factorization.

98644320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 98644320 is about 9931.9846959205. The cubic root of 98644320 is about 462.0518297955.

The spelling of 98644320 in words is "ninety-eight million, six hundred forty-four thousand, three hundred twenty".