99430728 has 16 divisors (see below), whose sum is σ = 248576880. Its totient is φ = 33143568.

The previous prime is 99430697. The next prime is 99430759. The reversal of 99430728 is 82703499.

It is an interprime number because it is at equal distance from previous prime (99430697) and next prime (99430759).

It is a self number, because there is not a number n which added to its sum of digits gives 99430728.

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 3 ways as a sum of consecutive naturals, for example, 2071450 + ... + 2071497.

It is an arithmetic number, because the mean of its divisors is an integer number (15536055).

Almost surely, 2^99430728 is an apocalyptic number.

It is an amenable number.

99430728 is an abundant number, since it is smaller than the sum of its proper divisors (149146152).

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

99430728 is a wasteful number, since it uses less digits than its factorization.

99430728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4142956 (or 4142952 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 99430728 is about 9971.4957754592. The cubic root of 99430728 is about 463.2764311997.

The spelling of 99430728 in words is "ninety-nine million, four hundred thirty thousand, seven hundred twenty-eight".