99910720 has 224 divisors, whose sum is σ = 303141888. Its totient is φ = 30523392.

The previous prime is 99910667. The next prime is 99910729. The reversal of 99910720 is 2701999.

It is a tau number, because it is divible by the number of its divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 99910720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99910729) 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, 1368604 + ... + 1368676.

It is an arithmetic number, because the mean of its divisors is an integer number (1353312).

Almost surely, 2^99910720 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 99910720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151570944).

99910720 is an abundant number, since it is smaller than the sum of its proper divisors (203231168).

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

99910720 is a wasteful number, since it uses less digits than its factorization.

99910720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 99910720 is about 9995.5350031902. The cubic root of 99910720 is about 464.0207085486.

The spelling of 99910720 in words is "ninety-nine million, nine hundred ten thousand, seven hundred twenty".