15996047 has 4 divisors (see below), whose sum is σ = 16018320. Its totient is φ = 15973776.

The previous prime is 15996041. The next prime is 15996061. The reversal of 15996047 is 74069951.

15996047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74069951 = 43 ⋅1722557.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15996047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15995995 and 15996013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15996041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10022 + ... + 11507.

It is an arithmetic number, because the mean of its divisors is an integer number (4004580).

Almost surely, 2^15996047 is an apocalyptic number.

15996047 is a deficient number, since it is larger than the sum of its proper divisors (22273).

15996047 is an equidigital number, since it uses as much as digits as its factorization.

15996047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22272.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 15996047 is about 3999.5058444763. The cubic root of 15996047 is about 251.9634563201.

The spelling of 15996047 in words is "fifteen million, nine hundred ninety-six thousand, forty-seven".