1278952904 has 32 divisors (see below), whose sum is σ = 2504200320. Its totient is φ = 611208576.

The previous prime is 1278952903. The next prime is 1278953003. The reversal of 1278952904 is 4092598721.

It is not an unprimeable number, because it can be changed into a prime (1278952903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459164 + ... + 461940.

It is an arithmetic number, because the mean of its divisors is an integer number (78256260).

Almost surely, 2^1278952904 is an apocalyptic number.

It is an amenable number.

1278952904 is a deficient number, since it is larger than the sum of its proper divisors (1225247416).

1278952904 is a wasteful number, since it uses less digits than its factorization.

1278952904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5309 (or 5305 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 1278952904 is about 35762.4510345698. The cubic root of 1278952904 is about 1085.4708975535.

The spelling of 1278952904 in words is "one billion, two hundred seventy-eight million, nine hundred fifty-two thousand, nine hundred four".