1272782264 has 24 divisors (see below), whose sum is σ = 2584164960. Its totient is φ = 587437344.

The previous prime is 1272782237. The next prime is 1272782267. The reversal of 1272782264 is 4622872721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272782267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 469352 + ... + 472055.

It is an arithmetic number, because the mean of its divisors is an integer number (107673540).

Almost surely, 2^1272782264 is an apocalyptic number.

It is an amenable number.

1272782264 is an abundant number, since it is smaller than the sum of its proper divisors (1311382696).

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

1272782264 is a wasteful number, since it uses less digits than its factorization.

1272782264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941439 (or 941422 counting only the distinct ones).

The product of its digits is 150528, while the sum is 41.

The square root of 1272782264 is about 35676.0741113705. The cubic root of 1272782264 is about 1083.7223704979.

The spelling of 1272782264 in words is "one billion, two hundred seventy-two million, seven hundred eighty-two thousand, two hundred sixty-four".