15966442 has 16 divisors (see below), whose sum is σ = 24373440. Its totient is φ = 7843392.

The previous prime is 15966437. The next prime is 15966469. The reversal of 15966442 is 24466951.

It is an unprimeable number.

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, 36658 + ... + 37090.

It is an arithmetic number, because the mean of its divisors is an integer number (1523340).

Almost surely, 2^15966442 is an apocalyptic number.

15966442 is a deficient number, since it is larger than the sum of its proper divisors (8406998).

15966442 is a wasteful number, since it uses less digits than its factorization.

15966442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717.

The product of its digits is 51840, while the sum is 37.

The square root of 15966442 is about 3995.8030481994. The cubic root of 15966442 is about 251.8079182107.

The spelling of 15966442 in words is "fifteen million, nine hundred sixty-six thousand, four hundred forty-two".