15800049 has 32 divisors (see below), whose sum is σ = 24780800. Its totient is φ = 9933840.

The previous prime is 15800017. The next prime is 15800053. The reversal of 15800049 is 94000851.

It is not a de Polignac number, because 15800049 - 2⁵ = 15800017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15799995 and 15800031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15800249) 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 31 ways as a sum of consecutive naturals, for example, 35772 + ... + 36210.

It is an arithmetic number, because the mean of its divisors is an integer number (774400).

Almost surely, 2^15800049 is an apocalyptic number.

It is an amenable number.

15800049 is a deficient number, since it is larger than the sum of its proper divisors (8980751).

15800049 is a wasteful number, since it uses less digits than its factorization.

15800049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 15800049 is about 3974.9275465095. The cubic root of 15800049 is about 250.9301298091.

The spelling of 15800049 in words is "fifteen million, eight hundred thousand, forty-nine".