278464252 has 12 divisors (see below), whose sum is σ = 531613656. Its totient is φ = 126574640.

The previous prime is 278464231. The next prime is 278464273. The reversal of 278464252 is 252464872.

It is an interprime number because it is at equal distance from previous prime (278464231) and next prime (278464273).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3164323 + ... + 3164410.

It is an arithmetic number, because the mean of its divisors is an integer number (44301138).

Almost surely, 2^278464252 is an apocalyptic number.

278464252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

278464252 is a deficient number, since it is larger than the sum of its proper divisors (253149404).

278464252 is a wasteful number, since it uses less digits than its factorization.

278464252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6328748 (or 6328746 counting only the distinct ones).

The product of its digits is 215040, while the sum is 40.

The square root of 278464252 is about 16687.2481853660. The cubic root of 278464252 is about 653.0149891769.

The spelling of 278464252 in words is "two hundred seventy-eight million, four hundred sixty-four thousand, two hundred fifty-two".