99427928 has 8 divisors (see below), whose sum is σ = 186427380. Its totient is φ = 49713960.

The previous prime is 99427927. The next prime is 99427957. The reversal of 99427928 is 82972499.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99427927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6214238 + ... + 6214253.

Almost surely, 2^99427928 is an apocalyptic number.

It is an amenable number.

99427928 is a deficient number, since it is larger than the sum of its proper divisors (86999452).

99427928 is a wasteful number, since it uses less digits than its factorization.

99427928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12428497 (or 12428493 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 99427928 is about 9971.3553742708. The cubic root of 99427928 is about 463.2720824898.

The spelling of 99427928 in words is "ninety-nine million, four hundred twenty-seven thousand, nine hundred twenty-eight".