99994320 has 120 divisors (see below), whose sum is σ = 347466600. Its totient is φ = 25740288.

The previous prime is 99994319. The next prime is 99994327. The reversal of 99994320 is 2349999.

It can be written as a sum of positive squares in 4 ways, for example, as 553536 + 99440784 = 744^2 + 9972^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (45).

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 (99994327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18486 + ... + 23274.

It is an arithmetic number, because the mean of its divisors is an integer number (2895555).

Almost surely, 2^99994320 is an apocalyptic number.

99994320 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 99994320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173733300).

99994320 is an abundant number, since it is smaller than the sum of its proper divisors (247472280).

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

99994320 is a wasteful number, since it uses less digits than its factorization.

99994320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4837 (or 4828 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 99994320 is about 9999.7159959671. The cubic root of 99994320 is about 464.1500951200.

The spelling of 99994320 in words is "ninety-nine million, nine hundred ninety-four thousand, three hundred twenty".