99624840 has 96 divisors (see below), whose sum is σ = 347690880. Its totient is φ = 22770048.

The previous prime is 99624829. The next prime is 99624853. The reversal of 99624840 is 4842699.

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

It is a junction number, because it is equal to n+sod(n) for n = 99624792 and 99624801.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2592 + ... + 14351.

It is an arithmetic number, because the mean of its divisors is an integer number (3621780).

Almost surely, 2^99624840 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 99624840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173845440).

99624840 is an abundant number, since it is smaller than the sum of its proper divisors (248066040).

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

99624840 is a wasteful number, since it uses less digits than its factorization.

99624840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16971 (or 16960 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 99624840 is about 9981.2243737930. The cubic root of 99624840 is about 463.5777098217.

The spelling of 99624840 in words is "ninety-nine million, six hundred twenty-four thousand, eight hundred forty".