123704856 has 96 divisors (see below), whose sum is σ = 381438720. Its totient is φ = 35851200.

The previous prime is 123704843. The next prime is 123704897. The reversal of 123704856 is 658407321.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 123704856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14821 + ... + 21611.

It is an arithmetic number, because the mean of its divisors is an integer number (3973320).

Almost surely, 2^123704856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123704856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190719360).

123704856 is an abundant number, since it is smaller than the sum of its proper divisors (257733864).

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

123704856 is a wasteful number, since it uses less digits than its factorization.

123704856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6837 (or 6830 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 123704856 is about 11122.2684736523. The cubic root of 123704856 is about 498.2671426823.

The spelling of 123704856 in words is "one hundred twenty-three million, seven hundred four thousand, eight hundred fifty-six".