1264004056 has 32 divisors (see below), whose sum is σ = 2712948480. Its totient is φ = 540842400.

The previous prime is 1264004011. The next prime is 1264004069. The reversal of 1264004056 is 6504004621.

It is a super-2 number, since 2×1264004056² = 3195412507168902272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17451 + ... + 53221.

It is an arithmetic number, because the mean of its divisors is an integer number (84779640).

Almost surely, 2^1264004056 is an apocalyptic number.

It is an amenable number.

1264004056 is an abundant number, since it is smaller than the sum of its proper divisors (1448944424).

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

1264004056 is a wasteful number, since it uses less digits than its factorization.

1264004056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36415 (or 36411 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1264004056 is about 35552.8347111732. The cubic root of 1264004056 is about 1081.2251916479.

Adding to 1264004056 its reverse (6504004621), we get a palindrome (7768008677).

The spelling of 1264004056 in words is "one billion, two hundred sixty-four million, four thousand, fifty-six".