104347728 has 60 divisors (see below), whose sum is σ = 293293728. Its totient is φ = 34632000.

The previous prime is 104347723. The next prime is 104347741. The reversal of 104347728 is 827743401.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 104347692 and 104347701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104347723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34701 + ... + 37587.

Almost surely, 2^104347728 is an apocalyptic number.

104347728 is a gapful number since it is divisible by the number (18) 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 104347728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146646864).

104347728 is an abundant number, since it is smaller than the sum of its proper divisors (188946000).

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

104347728 is a wasteful number, since it uses less digits than its factorization.

104347728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152 (or 3143 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 104347728 is about 10215.0735680170. The cubic root of 104347728 is about 470.7904730209.

The spelling of 104347728 in words is "one hundred four million, three hundred forty-seven thousand, seven hundred twenty-eight".