104389728 has 48 divisors (see below), whose sum is σ = 281438640. Its totient is φ = 33854976.

The previous prime is 104389723. The next prime is 104389777. The reversal of 104389728 is 827983401.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 104389728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104389721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11143 + ... + 18246.

It is an arithmetic number, because the mean of its divisors is an integer number (5863305).

Almost surely, 2^104389728 is an apocalyptic number.

It is an amenable number.

104389728 is an abundant number, since it is smaller than the sum of its proper divisors (177048912).

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

104389728 is a wasteful number, since it uses less digits than its factorization.

104389728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29439 (or 29431 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 104389728 is about 10217.1291466830. The cubic root of 104389728 is about 470.8536289961.

The spelling of 104389728 in words is "one hundred four million, three hundred eighty-nine thousand, seven hundred twenty-eight".