1264312572 has 24 divisors (see below), whose sum is σ = 3022016592. Its totient is φ = 411158400.

The previous prime is 1264312561. The next prime is 1264312589. The reversal of 1264312572 is 2752134621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1284379 + ... + 1285362.

It is an arithmetic number, because the mean of its divisors is an integer number (125917358).

Almost surely, 2^1264312572 is an apocalyptic number.

1264312572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1264312572 is an abundant number, since it is smaller than the sum of its proper divisors (1757704020).

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

1264312572 is a wasteful number, since it uses less digits than its factorization.

1264312572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569789 (or 2569787 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 1264312572 is about 35557.1732847255. The cubic root of 1264312572 is about 1081.3131523719.

The spelling of 1264312572 in words is "one billion, two hundred sixty-four million, three hundred twelve thousand, five hundred seventy-two".