99801828 has 72 divisors (see below), whose sum is σ = 301005600. Its totient is φ = 28513296.

The previous prime is 99801827. The next prime is 99801829. The reversal of 99801828 is 82810899.

It is an interprime number because it is at equal distance from previous prime (99801827) and next prime (99801829).

It is not an unprimeable number, because it can be changed into a prime (99801827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4138 + ... + 14721.

Almost surely, 2^99801828 is an apocalyptic number.

99801828 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

99801828 is an abundant number, since it is smaller than the sum of its proper divisors (201203772).

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

99801828 is a wasteful number, since it uses less digits than its factorization.

99801828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18886 (or 18871 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 99801828 is about 9990.0864861121. The cubic root of 99801828 is about 463.8520696182.

The spelling of 99801828 in words is "ninety-nine million, eight hundred one thousand, eight hundred twenty-eight".