278779060 has 24 divisors (see below), whose sum is σ = 669070080. Its totient is φ = 95581344.

The previous prime is 278779037. The next prime is 278779087. The reversal of 278779060 is 60977872.

It is a self number, because there is not a number n which added to its sum of digits gives 278779060.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995500 + ... + 995779.

It is an arithmetic number, because the mean of its divisors is an integer number (27877920).

Almost surely, 2^278779060 is an apocalyptic number.

278779060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278779060 is an abundant number, since it is smaller than the sum of its proper divisors (390291020).

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

278779060 is a wasteful number, since it uses less digits than its factorization.

278779060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991295 (or 1991293 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 278779060 is about 16696.6781127265. The cubic root of 278779060 is about 653.2609775717.

The spelling of 278779060 in words is "two hundred seventy-eight million, seven hundred seventy-nine thousand, sixty".