278464255 has 8 divisors (see below), whose sum is σ = 334857600. Its totient is φ = 222304416.

The previous prime is 278464231. The next prime is 278464273. The reversal of 278464255 is 552464872.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 278464255 - 2¹¹ = 278462207 is a prime.

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, 55740 + ... + 60529.

It is an arithmetic number, because the mean of its divisors is an integer number (41857200).

Almost surely, 2^278464255 is an apocalyptic number.

278464255 is a deficient number, since it is larger than the sum of its proper divisors (56393345).

278464255 is a wasteful number, since it uses less digits than its factorization.

278464255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116753.

The product of its digits is 537600, while the sum is 43.

The square root of 278464255 is about 16687.2482752550. The cubic root of 278464255 is about 653.0149915220.

The spelling of 278464255 in words is "two hundred seventy-eight million, four hundred sixty-four thousand, two hundred fifty-five".