1264464140 has 12 divisors (see below), whose sum is σ = 2655374736. Its totient is φ = 505785648.

The previous prime is 1264464139. The next prime is 1264464151. The reversal of 1264464140 is 414644621.

It is a super-2 number, since 2×1264464140² = 3197739122691879200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1264464097 and 1264464106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31611584 + ... + 31611623.

It is an arithmetic number, because the mean of its divisors is an integer number (221281228).

Almost surely, 2^1264464140 is an apocalyptic number.

1264464140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264464140 is an abundant number, since it is smaller than the sum of its proper divisors (1390910596).

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

1264464140 is a wasteful number, since it uses less digits than its factorization.

1264464140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63223216 (or 63223214 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 1264464140 is about 35559.3045488800. The cubic root of 1264464140 is about 1081.3563605486.

The spelling of 1264464140 in words is "one billion, two hundred sixty-four million, four hundred sixty-four thousand, one hundred forty".