100513998 has 24 divisors (see below), whose sum is σ = 234533208. Its totient is φ = 30927312.

The previous prime is 100513969. The next prime is 100514021. The reversal of 100513998 is 899315001.

It is a happy number.

It is a Curzon number.

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, 214540 + ... + 215007.

It is an arithmetic number, because the mean of its divisors is an integer number (9772217).

Almost surely, 2^100513998 is an apocalyptic number.

100513998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100513998 is an abundant number, since it is smaller than the sum of its proper divisors (134019210).

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

100513998 is a wasteful number, since it uses less digits than its factorization.

100513998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429568 (or 429565 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 100513998 is about 10025.6669603573. Note that the first 3 decimals coincide. The cubic root of 100513998 is about 464.9527804982.

Adding to 100513998 its reverse (899315001), we get a palindrome (999828999).

The spelling of 100513998 in words is "one hundred million, five hundred thirteen thousand, nine hundred ninety-eight".