15996747 has 8 divisors (see below), whose sum is σ = 22969744. Its totient is φ = 9844128.

The previous prime is 15996733. The next prime is 15996749. The reversal of 15996747 is 74769951.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15996747 - 2¹⁰ = 15995723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15996696 and 15996705.

It is not an unprimeable number, because it can be changed into a prime (15996749) 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 7 ways as a sum of consecutive naturals, for example, 205048 + ... + 205125.

It is an arithmetic number, because the mean of its divisors is an integer number (2871218).

Almost surely, 2^15996747 is an apocalyptic number.

15996747 is a deficient number, since it is larger than the sum of its proper divisors (6972997).

15996747 is a wasteful number, since it uses less digits than its factorization.

15996747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410189.

The product of its digits is 476280, while the sum is 48.

The square root of 15996747 is about 3999.5933543299. The cubic root of 15996747 is about 251.9671316416.

The spelling of 15996747 in words is "fifteen million, nine hundred ninety-six thousand, seven hundred forty-seven".