99170428 has 12 divisors (see below), whose sum is σ = 198340912. Its totient is φ = 42501600.

The previous prime is 99170419. The next prime is 99170429. The reversal of 99170428 is 82407199.

99170428 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99170429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1770873 + ... + 1770928.

Almost surely, 2^99170428 is an apocalyptic number.

It is an amenable number.

99170428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99170428 is a wasteful number, since it uses less digits than its factorization.

99170428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541812 (or 3541810 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 99170428 is about 9958.4350176120. The cubic root of 99170428 is about 462.8718069871.

The spelling of 99170428 in words is "ninety-nine million, one hundred seventy thousand, four hundred twenty-eight".