99427824 has 120 divisors (see below), whose sum is σ = 292481280. Its totient is φ = 32695488.

The previous prime is 99427777. The next prime is 99427831. The reversal of 99427824 is 42872499.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 99427824.

It is a congruent number.

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, 415897 + ... + 416135.

It is an arithmetic number, because the mean of its divisors is an integer number (2437344).

Almost surely, 2^99427824 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 99427824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146240640).

99427824 is an abundant number, since it is smaller than the sum of its proper divisors (193053456).

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

99427824 is a wasteful number, since it uses less digits than its factorization.

99427824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 351 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 99427824 is about 9971.3501593315. The cubic root of 99427824 is about 463.2719209647.

It can be divided in two parts, 9942 and 7824, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 99427824 in words is "ninety-nine million, four hundred twenty-seven thousand, eight hundred twenty-four".