104890 has 16 divisors (see below), whose sum is σ = 200232. Its totient is φ = 39424.

The previous prime is 104879. The next prime is 104891. The reversal of 104890 is 98401.

It can be written as a sum of positive squares in 4 ways, for example, as 69169 + 35721 = 263^2 + 189^2 .

It is a super-2 number, since 2×104890² = 22003824200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (104891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139 + ... + 478.

2¹⁰⁴⁸⁹⁰ is an apocalyptic number.

104890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

104890 is a deficient number, since it is larger than the sum of its proper divisors (95342).

104890 is a wasteful number, since it uses less digits than its factorization.

104890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 104890 is about 323.8672567581. The cubic root of 104890 is about 47.1604595599.

It can be divided in two parts, 10 and 4890, that added together give a square (4900 = 70²).

The spelling of 104890 in words is "one hundred four thousand, eight hundred ninety".