15790 has 8 divisors (see below), whose sum is σ = 28440. Its totient is φ = 6312.

The previous prime is 15787. The next prime is 15791. The reversal of 15790 is 9751.

15790 = 18² + 19² + ... + 37².

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780 + ... + 799.

It is an arithmetic number, because the mean of its divisors is an integer number (3555).

2¹⁵⁷⁹⁰ is an apocalyptic number.

15790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15790 is a deficient number, since it is larger than the sum of its proper divisors (12650).

15790 is a wasteful number, since it uses less digits than its factorization.

15790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 15790 is about 125.6582667396. The cubic root of 15790 is about 25.0876920446.

The spelling of 15790 in words is "fifteen thousand, seven hundred ninety".