104638890 has 32 divisors (see below), whose sum is σ = 264352320. Its totient is φ = 26434944.

The previous prime is 104638889. The next prime is 104638903. The reversal of 104638890 is 98836401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91219 + ... + 92358.

It is an arithmetic number, because the mean of its divisors is an integer number (8261010).

Almost surely, 2^104638890 is an apocalyptic number.

104638890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

104638890 is an abundant number, since it is smaller than the sum of its proper divisors (159713430).

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

104638890 is a wasteful number, since it uses less digits than its factorization.

104638890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183606.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 104638890 is about 10229.3152263482. The cubic root of 104638890 is about 471.2279493982.

The spelling of 104638890 in words is "one hundred four million, six hundred thirty-eight thousand, eight hundred ninety".