104728815 has 32 divisors (see below), whose sum is σ = 186667200. Its totient is φ = 55710720.

The previous prime is 104728807. The next prime is 104728843. The reversal of 104728815 is 518827401.

It is not a de Polignac number, because 104728815 - 2³ = 104728807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104728815.

It is a congruent number.

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, 69591 + ... + 71079.

It is an arithmetic number, because the mean of its divisors is an integer number (5833350).

Almost surely, 2^104728815 is an apocalyptic number.

104728815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

104728815 is a deficient number, since it is larger than the sum of its proper divisors (81938385).

104728815 is a wasteful number, since it uses less digits than its factorization.

104728815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024 (or 2018 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 104728815 is about 10233.7097379201. The cubic root of 104728815 is about 471.3628993526.

The spelling of 104728815 in words is "one hundred four million, seven hundred twenty-eight thousand, eight hundred fifteen".