104157640 has 64 divisors (see below), whose sum is σ = 253497600. Its totient is φ = 38366208.

The previous prime is 104157631. The next prime is 104157659. The reversal of 104157640 is 46751401.

It is a junction number, because it is equal to n+sod(n) for n = 104157599 and 104157608.

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, 30331 + ... + 33589.

It is an arithmetic number, because the mean of its divisors is an integer number (3960900).

Almost surely, 2^104157640 is an apocalyptic number.

104157640 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 104157640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126748800).

104157640 is an abundant number, since it is smaller than the sum of its proper divisors (149339960).

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

104157640 is a wasteful number, since it uses less digits than its factorization.

104157640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334 (or 3330 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 104157640 is about 10205.7650374678. The cubic root of 104157640 is about 470.5044229782.

The spelling of 104157640 in words is "one hundred four million, one hundred fifty-seven thousand, six hundred forty".