99239280 has 160 divisors (see below), whose sum is σ = 370214400. Its totient is φ = 21482496.

The previous prime is 99239279. The next prime is 99239293. The reversal of 99239280 is 8293299.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 30366 + ... + 33474.

It is an arithmetic number, because the mean of its divisors is an integer number (2313840).

Almost surely, 2^99239280 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 99239280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185107200).

99239280 is an abundant number, since it is smaller than the sum of its proper divisors (270975120).

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

99239280 is a wasteful number, since it uses less digits than its factorization.

99239280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151 (or 3145 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 99239280 is about 9961.8913866795. The cubic root of 99239280 is about 462.9789030158.

The spelling of 99239280 in words is "ninety-nine million, two hundred thirty-nine thousand, two hundred eighty".