99278928 has 60 divisors (see below), whose sum is σ = 317538208. Its totient is φ = 28365120.

The previous prime is 99278909. The next prime is 99278939. The reversal of 99278928 is 82987299.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48238 + ... + 50253.

Almost surely, 2^99278928 is an apocalyptic number.

It is an amenable number.

99278928 is an abundant number, since it is smaller than the sum of its proper divisors (218259280).

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

99278928 is a wasteful number, since it uses less digits than its factorization.

99278928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98512 (or 98503 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 99278928 is about 9963.8811715114. The cubic root of 99278928 is about 463.0405511305.

The spelling of 99278928 in words is "ninety-nine million, two hundred seventy-eight thousand, nine hundred twenty-eight".