15974 has 12 divisors (see below), whose sum is σ = 28044. Its totient is φ = 6804.

The previous prime is 15973. The next prime is 15991. The reversal of 15974 is 47951.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 15.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17 + ... + 179.

It is an arithmetic number, because the mean of its divisors is an integer number (2337).

2¹⁵⁹⁷⁴ is an apocalyptic number.

15974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15974 is a deficient number, since it is larger than the sum of its proper divisors (12070).

15974 is a wasteful number, since it uses less digits than its factorization.

15974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 172 counting only the distinct ones).

The product of its digits is 1260, while the sum is 26.

The square root of 15974 is about 126.3882905969. The cubic root of 15974 is about 25.1847644532.

It can be divided in two parts, 15 and 974, that added together give a palindrome (989).

The spelling of 15974 in words is "fifteen thousand, nine hundred seventy-four".