279131428 has 12 divisors (see below), whose sum is σ = 488989872. Its totient is φ = 139420040.

The previous prime is 279131423. The next prime is 279131429. The reversal of 279131428 is 824131972.

It is not an unprimeable number, because it can be changed into a prime (279131423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32050 + ... + 39817.

It is an arithmetic number, because the mean of its divisors is an integer number (40749156).

Almost surely, 2^279131428 is an apocalyptic number.

It is an amenable number.

279131428 is a deficient number, since it is larger than the sum of its proper divisors (209858444).

279131428 is a wasteful number, since it uses less digits than its factorization.

279131428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72842 (or 72840 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 279131428 is about 16707.2268195533. The cubic root of 279131428 is about 653.5360954956.

The spelling of 279131428 in words is "two hundred seventy-nine million, one hundred thirty-one thousand, four hundred twenty-eight".