279488860220 has 48 divisors (see below), whose sum is σ = 595801640448. Its totient is φ = 110108281920.

The previous prime is 279488860207. The next prime is 279488860241. The reversal of 279488860220 is 22068884972.

It is a happy number.

It is a super-2 number, since 2×279488860220² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1295747 + ... + 1495973.

It is an arithmetic number, because the mean of its divisors is an integer number (12412534176).

Almost surely, 2^279488860220 is an apocalyptic number.

279488860220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279488860220 is an abundant number, since it is smaller than the sum of its proper divisors (316312780228).

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

279488860220 is a wasteful number, since it uses less digits than its factorization.

279488860220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201290 (or 201288 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 279488860220 in words is "two hundred seventy-nine billion, four hundred eighty-eight million, eight hundred sixty thousand, two hundred twenty".