1278884452 has 12 divisors (see below), whose sum is σ = 2355839920. Its totient is φ = 605787336.

The previous prime is 1278884441. The next prime is 1278884473. The reversal of 1278884452 is 2544888721.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1278884396 and 1278884405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8413638 + ... + 8413789.

Almost surely, 2^1278884452 is an apocalyptic number.

It is an amenable number.

1278884452 is a deficient number, since it is larger than the sum of its proper divisors (1076955468).

1278884452 is a wasteful number, since it uses less digits than its factorization.

1278884452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16827450 (or 16827448 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 49.

The square root of 1278884452 is about 35761.4939844520. The cubic root of 1278884452 is about 1085.4515317167.

The spelling of 1278884452 in words is "one billion, two hundred seventy-eight million, eight hundred eighty-four thousand, four hundred fifty-two".