1288279452 has 24 divisors (see below), whose sum is σ = 3025896832. Its totient is φ = 426582000.

The previous prime is 1288279429. The next prime is 1288279453. The reversal of 1288279452 is 2549728821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288279453) 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, 353674 + ... + 357297.

Almost surely, 2^1288279452 is an apocalyptic number.

1288279452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1288279452 is an abundant number, since it is smaller than the sum of its proper divisors (1737617380).

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

1288279452 is a wasteful number, since it uses less digits than its factorization.

1288279452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711129 (or 711127 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 1288279452 is about 35892.6099914732. The cubic root of 1288279452 is about 1088.1030474323.

The spelling of 1288279452 in words is "one billion, two hundred eighty-eight million, two hundred seventy-nine thousand, four hundred fifty-two".