1264271560 has 32 divisors (see below), whose sum is σ = 2854346040. Its totient is φ = 503977984.

The previous prime is 1264271551. The next prime is 1264271599. The reversal of 1264271560 is 651724621.

It can be written as a sum of positive squares in 4 ways, for example, as 1234960164 + 29311396 = 35142^2 + 5414^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42217 + ... + 65656.

Almost surely, 2^1264271560 is an apocalyptic number.

1264271560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264271560 is an abundant number, since it is smaller than the sum of its proper divisors (1590074480).

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

1264271560 is a wasteful number, since it uses less digits than its factorization.

1264271560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108177 (or 108173 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1264271560 is about 35556.5965750379. The cubic root of 1264271560 is about 1081.3014603015.

The spelling of 1264271560 in words is "one billion, two hundred sixty-four million, two hundred seventy-one thousand, five hundred sixty".