1278502464 has 56 divisors (see below), whose sum is σ = 3446556480. Its totient is φ = 418123264.

The previous prime is 1278502427. The next prime is 1278502471. The reversal of 1278502464 is 4642058721.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52644 + ... + 72995.

Almost surely, 2^1278502464 is an apocalyptic number.

It is an amenable number.

1278502464 is an abundant number, since it is smaller than the sum of its proper divisors (2168054016).

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

1278502464 is a wasteful number, since it uses less digits than its factorization.

1278502464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125707 (or 125697 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 1278502464 is about 35756.1528131873. The cubic root of 1278502464 is about 1085.3434503474.

The spelling of 1278502464 in words is "one billion, two hundred seventy-eight million, five hundred two thousand, four hundred sixty-four".