1262917264 has 40 divisors (see below), whose sum is σ = 2799427968. Its totient is φ = 540675840.

The previous prime is 1262917261. The next prime is 1262917283. The reversal of 1262917264 is 4627192621.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1262917261) by changing a digit.

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, 110004 + ... + 120940.

Almost surely, 2^1262917264 is an apocalyptic number.

1262917264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1262917264 is an abundant number, since it is smaller than the sum of its proper divisors (1536510704).

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

1262917264 is a wasteful number, since it uses less digits than its factorization.

1262917264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11983 (or 11977 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 1262917264 is about 35537.5472423182. The cubic root of 1262917264 is about 1080.9152232797.

The spelling of 1262917264 in words is "one billion, two hundred sixty-two million, nine hundred seventeen thousand, two hundred sixty-four".