104139810 has 64 divisors (see below), whose sum is σ = 282303360. Its totient is φ = 27311040.

The previous prime is 104139781. The next prime is 104139821. The reversal of 104139810 is 18931401.

It is a super-2 number, since 2×104139810² = 21690200053672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 13309 + ... + 19631.

It is an arithmetic number, because the mean of its divisors is an integer number (4410990).

Almost surely, 2^104139810 is an apocalyptic number.

104139810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 104139810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141151680).

104139810 is an abundant number, since it is smaller than the sum of its proper divisors (178163550).

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

104139810 is a wasteful number, since it uses less digits than its factorization.

104139810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400 (or 6394 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 104139810 is about 10204.8914741902. The cubic root of 104139810 is about 470.4775740193.

The spelling of 104139810 in words is "one hundred four million, one hundred thirty-nine thousand, eight hundred ten".