9898726320 has 120 divisors (see below), whose sum is σ = 37992273696. Its totient is φ = 2262564864.

The previous prime is 9898726301. The next prime is 9898726379. The reversal of 9898726320 is 236278989.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 976977 + ... + 987056.

Almost surely, 2^9898726320 is an apocalyptic number.

9898726320 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9898726320 is an abundant number, since it is smaller than the sum of its proper divisors (28093547376).

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

9898726320 is a wasteful number, since it uses less digits than its factorization.

9898726320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964059 (or 1964050 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 9898726320 is about 99492.3430219633. The cubic root of 9898726320 is about 2147.1370814721.

The spelling of 9898726320 in words is "nine billion, eight hundred ninety-eight million, seven hundred twenty-six thousand, three hundred twenty".