99428100 has 72 divisors (see below), whose sum is σ = 289648128. Its totient is φ = 26332800.

The previous prime is 99428093. The next prime is 99428101. The reversal of 99428100 is 182499.

It is a super-2 number, since 2×99428100² = 19771894139220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99428101) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 46045 + ... + 48155.

Almost surely, 2^99428100 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 99428100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144824064).

99428100 is an abundant number, since it is smaller than the sum of its proper divisors (190220028).

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

99428100 is a wasteful number, since it uses less digits than its factorization.

99428100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285 (or 2278 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 99428100 is about 9971.3639989723. The cubic root of 99428100 is about 463.2723496272.

The spelling of 99428100 in words is "ninety-nine million, four hundred twenty-eight thousand, one hundred".