15800056 has 16 divisors (see below), whose sum is σ = 30043440. Its totient is φ = 7788480.

The previous prime is 15800053. The next prime is 15800063. The reversal of 15800056 is 65000851.

It is a self number, because there is not a number n which added to its sum of digits gives 15800056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15800053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13341 + ... + 14476.

It is an arithmetic number, because the mean of its divisors is an integer number (1877715).

Almost surely, 2^15800056 is an apocalyptic number.

It is an amenable number.

15800056 is a deficient number, since it is larger than the sum of its proper divisors (14243384).

15800056 is a wasteful number, since it uses less digits than its factorization.

15800056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27894 (or 27890 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 15800056 is about 3974.9284270286. The cubic root of 15800056 is about 250.9301668662.

The spelling of 15800056 in words is "fifteen million, eight hundred thousand, fifty-six".