15628 has 6 divisors (see below), whose sum is σ = 27356. Its totient is φ = 7812.

The previous prime is 15619. The next prime is 15629. The reversal of 15628 is 82651.

It is a happy number.

15628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 15599 and 15608.

It is not an unprimeable number, because it can be changed into a prime (15629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1950 + ... + 1957.

15628 is a Friedman number, since it can be written as 5^6+8/2-1, using all its digits and the basic arithmetic operations.

2¹⁵⁶²⁸ is an apocalyptic number.

It is an amenable number.

15628 is a deficient number, since it is larger than the sum of its proper divisors (11728).

15628 is a wasteful number, since it uses less digits than its factorization.

15628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911 (or 3909 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 15628 is about 125.0119994241. The cubic root of 15628 is about 25.0015998976.

The spelling of 15628 in words is "fifteen thousand, six hundred twenty-eight".