279984480 has 48 divisors (see below), whose sum is σ = 881952624. Its totient is φ = 74662400.

The previous prime is 279984479. The next prime is 279984487. The reversal of 279984480 is 84489972.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279984487) 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, 291171 + ... + 292130.

It is an arithmetic number, because the mean of its divisors is an integer number (18374013).

Almost surely, 2^279984480 is an apocalyptic number.

279984480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279984480 is an abundant number, since it is smaller than the sum of its proper divisors (601968144).

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

279984480 is a wasteful number, since it uses less digits than its factorization.

279984480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583319 (or 583311 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 279984480 is about 16732.7367755547. The cubic root of 279984480 is about 654.2011744455.

The spelling of 279984480 in words is "two hundred seventy-nine million, nine hundred eighty-four thousand, four hundred eighty".