15874 has 4 divisors (see below), whose sum is σ = 23814. Its totient is φ = 7936.

The previous prime is 15859. The next prime is 15877. The reversal of 15874 is 47851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47851 = 109 ⋅439.

It can be written as a sum of positive squares in only one way, i.e., 8649 + 7225 = 93^2 + 85^2 .

It is not an unprimeable number, because it can be changed into a prime (15877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3967 + ... + 3970.

2¹⁵⁸⁷⁴ is an apocalyptic number.

15874 is a deficient number, since it is larger than the sum of its proper divisors (7940).

15874 is an equidigital number, since it uses as much as digits as its factorization.

15874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939.

The product of its digits is 1120, while the sum is 25.

The square root of 15874 is about 125.9920632421. The cubic root of 15874 is about 25.1321007463.

It can be divided in two parts, 158 and 74, that added together give a palindrome (232).

The spelling of 15874 in words is "fifteen thousand, eight hundred seventy-four".