104491840 has 28 divisors (see below), whose sum is σ = 248821956. Its totient is φ = 41796608.

The previous prime is 104491823. The next prime is 104491859. The reversal of 104491840 is 48194401.

It can be written as a sum of positive squares in 2 ways, for example, as 51609856 + 52881984 = 7184^2 + 7272^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162949 + ... + 163588.

Almost surely, 2^104491840 is an apocalyptic number.

104491840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104491840 is an abundant number, since it is smaller than the sum of its proper divisors (144330116).

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

104491840 is an equidigital number, since it uses as much as digits as its factorization.

104491840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326554 (or 326544 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 104491840 is about 10222.1250236925. The cubic root of 104491840 is about 471.0071055826.

The spelling of 104491840 in words is "one hundred four million, four hundred ninety-one thousand, eight hundred forty".