279320 has 16 divisors (see below), whose sum is σ = 628560. Its totient is φ = 111712.

The previous prime is 279317. The next prime is 279329. The reversal of 279320 is 23972.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279329) 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, 3452 + ... + 3531.

It is an arithmetic number, because the mean of its divisors is an integer number (39285).

2²⁷⁹³²⁰ is an apocalyptic number.

279320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279320 is an abundant number, since it is smaller than the sum of its proper divisors (349240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

279320 is a wasteful number, since it uses less digits than its factorization.

279320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994 (or 6990 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 279320 is about 528.5073320210. The cubic root of 279320 is about 65.3683231521.

The spelling of 279320 in words is "two hundred seventy-nine thousand, three hundred twenty".