104821900 has 18 divisors (see below), whose sum is σ = 227463740. Its totient is φ = 41928720.

The previous prime is 104821889. The next prime is 104821901. The reversal of 104821900 is 9128401.

It is a happy number.

It is a super-2 number, since 2×104821900² = 21975261439220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (104821901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 524010 + ... + 524209.

Almost surely, 2^104821900 is an apocalyptic number.

104821900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104821900 is an abundant number, since it is smaller than the sum of its proper divisors (122641840).

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

104821900 is a wasteful number, since it uses less digits than its factorization.

104821900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048233 (or 1048226 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 104821900 is about 10238.2566875421. The cubic root of 104821900 is about 471.5025101572.

The spelling of 104821900 in words is "one hundred four million, eight hundred twenty-one thousand, nine hundred".