278820060 has 96 divisors (see below), whose sum is σ = 870186240. Its totient is φ = 66290688.

The previous prime is 278820037. The next prime is 278820083. The reversal of 278820060 is 60028872.

It is an interprime number because it is at equal distance from previous prime (278820037) and next prime (278820083).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12187 + ... + 26573.

It is an arithmetic number, because the mean of its divisors is an integer number (9064440).

Almost surely, 2^278820060 is an apocalyptic number.

278820060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278820060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435093120).

278820060 is an abundant number, since it is smaller than the sum of its proper divisors (591366180).

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

278820060 is a wasteful number, since it uses less digits than its factorization.

278820060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14435 (or 14433 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 278820060 is about 16697.9058567235. The cubic root of 278820060 is about 653.2930010041.

The spelling of 278820060 in words is "two hundred seventy-eight million, eight hundred twenty thousand, sixty".