279972020 has 12 divisors (see below), whose sum is σ = 587941284. Its totient is φ = 111988800.

The previous prime is 279972019. The next prime is 279972041. The reversal of 279972020 is 20279972.

It can be written as a sum of positive squares in 2 ways, for example, as 39287824 + 240684196 = 6268^2 + 15514^2 .

It is a congruent number.

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, 6999281 + ... + 6999320.

It is an arithmetic number, because the mean of its divisors is an integer number (48995107).

Almost surely, 2^279972020 is an apocalyptic number.

279972020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279972020 is an abundant number, since it is smaller than the sum of its proper divisors (307969264).

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

279972020 is a wasteful number, since it uses less digits than its factorization.

279972020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13998610 (or 13998608 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 279972020 is about 16732.3644473816. The cubic root of 279972020 is about 654.1914697796.

The spelling of 279972020 in words is "two hundred seventy-nine million, nine hundred seventy-two thousand, twenty".