279628 has 12 divisors (see below), whose sum is σ = 498960. Its totient is φ = 137072.

The previous prime is 279619. The next prime is 279637. The reversal of 279628 is 826972.

It is an interprime number because it is at equal distance from previous prime (279619) and next prime (279637).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 279593 and 279602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448 + ... + 871.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

279628 is a Friedman number, since it can be written as 6^7-28*(9+2), using all its digits and the basic arithmetic operations.

2²⁷⁹⁶²⁸ is an apocalyptic number.

It is an amenable number.

279628 is a deficient number, since it is larger than the sum of its proper divisors (219332).

279628 is a wasteful number, since it uses less digits than its factorization.

279628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1374 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 279628 is about 528.7986384249. The cubic root of 279628 is about 65.3923410621.

The spelling of 279628 in words is "two hundred seventy-nine thousand, six hundred twenty-eight".