104731640 has 128 divisors (see below), whose sum is σ = 268531200. Its totient is φ = 36495360.

The previous prime is 104731621. The next prime is 104731661. The reversal of 104731640 is 46137401.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1176716 + ... + 1176804.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 2^104731640 is an apocalyptic number.

104731640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 104731640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134265600).

104731640 is an abundant number, since it is smaller than the sum of its proper divisors (163799560).

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

104731640 is a wasteful number, since it uses less digits than its factorization.

104731640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 104731640 is about 10233.8477612284. The cubic root of 104731640 is about 471.3671375629.

The spelling of 104731640 in words is "one hundred four million, seven hundred thirty-one thousand, six hundred forty".