279472420 has 24 divisors (see below), whose sum is σ = 607131000. Its totient is φ = 107933952.

The previous prime is 279472399. The next prime is 279472421. The reversal of 279472420 is 24274972.

It can be written as a sum of positive squares in 4 ways, for example, as 107495424 + 171976996 = 10368^2 + 13114^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 279472420.

It is not an unprimeable number, because it can be changed into a prime (279472421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240345 + ... + 241504.

It is an arithmetic number, because the mean of its divisors is an integer number (25297125).

Almost surely, 2^279472420 is an apocalyptic number.

279472420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279472420 is an abundant number, since it is smaller than the sum of its proper divisors (327658580).

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

279472420 is a wasteful number, since it uses less digits than its factorization.

279472420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481887 (or 481885 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 279472420 is about 16717.4286300256. The cubic root of 279472420 is about 653.8021110392.

The spelling of 279472420 in words is "two hundred seventy-nine million, four hundred seventy-two thousand, four hundred twenty".