104442728 has 32 divisors (see below), whose sum is σ = 211415400. Its totient is φ = 48085248.

The previous prime is 104442727. The next prime is 104442733. The reversal of 104442728 is 827244401.

It can be written as a sum of positive squares in 4 ways, for example, as 73994404 + 30448324 = 8602^2 + 5518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 104442694 and 104442703.

It is not an unprimeable number, because it can be changed into a prime (104442727) 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, 51950 + ... + 53922.

Almost surely, 2^104442728 is an apocalyptic number.

It is an amenable number.

104442728 is an abundant number, since it is smaller than the sum of its proper divisors (106972672).

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

104442728 is a wasteful number, since it uses less digits than its factorization.

104442728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501 (or 2497 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 104442728 is about 10219.7225011250. The cubic root of 104442728 is about 470.9333016505.

The spelling of 104442728 in words is "one hundred four million, four hundred forty-two thousand, seven hundred twenty-eight".