278361248 has 48 divisors (see below), whose sum is σ = 629324640. Its totient is φ = 119865600.

The previous prime is 278361221. The next prime is 278361253. The reversal of 278361248 is 842163872.

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, 14123 + ... + 27498.

It is an arithmetic number, because the mean of its divisors is an integer number (13110930).

Almost surely, 2^278361248 is an apocalyptic number.

It is an amenable number.

278361248 is an abundant number, since it is smaller than the sum of its proper divisors (350963392).

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

278361248 is a wasteful number, since it uses less digits than its factorization.

278361248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41661 (or 41653 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 278361248 is about 16684.1615911618. The cubic root of 278361248 is about 652.9344624418.

The spelling of 278361248 in words is "two hundred seventy-eight million, three hundred sixty-one thousand, two hundred forty-eight".