100209800 has 48 divisors (see below), whose sum is σ = 245259600. Its totient is φ = 37972800.

The previous prime is 100209793. The next prime is 100209829. The reversal of 100209800 is 8902001.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 9386 + ... + 16985.

It is an arithmetic number, because the mean of its divisors is an integer number (5109575).

Almost surely, 2^100209800 is an apocalyptic number.

100209800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100209800 is an abundant number, since it is smaller than the sum of its proper divisors (145049800).

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

100209800 is a wasteful number, since it uses less digits than its factorization.

100209800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26406 (or 26397 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 100209800 is about 10010.4845037590. The cubic root of 100209800 is about 464.4832583997.

The spelling of 100209800 in words is "one hundred million, two hundred nine thousand, eight hundred".