279420 has 24 divisors (see below), whose sum is σ = 782544. Its totient is φ = 74496.

The previous prime is 279413. The next prime is 279421. The reversal of 279420 is 24972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279421) by changing a digit.

279420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2269 + ... + 2388.

It is an arithmetic number, because the mean of its divisors is an integer number (32606).

2²⁷⁹⁴²⁰ is an apocalyptic number.

279420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279420 is an abundant number, since it is smaller than the sum of its proper divisors (503124).

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

279420 is a wasteful number, since it uses less digits than its factorization.

279420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669 (or 4667 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 279420 is about 528.6019296219. The cubic root of 279420 is about 65.3761231096.

The spelling of 279420 in words is "two hundred seventy-nine thousand, four hundred twenty".