1267278288 has 40 divisors (see below), whose sum is σ = 3416144448. Its totient is φ = 404059392.

The previous prime is 1267278281. The next prime is 1267278289. The reversal of 1267278288 is 8828727621.

It is a self number, because there is not a number n which added to its sum of digits gives 1267278288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267278281) 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, 572845 + ... + 575052.

Almost surely, 2^1267278288 is an apocalyptic number.

It is an amenable number.

1267278288 is an abundant number, since it is smaller than the sum of its proper divisors (2148866160).

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

1267278288 is a wasteful number, since it uses less digits than its factorization.

1267278288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147931 (or 1147925 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 51.

The square root of 1267278288 is about 35598.8523410517. The cubic root of 1267278288 is about 1082.1579760295.

The spelling of 1267278288 in words is "one billion, two hundred sixty-seven million, two hundred seventy-eight thousand, two hundred eighty-eight".