1269268056 has 160 divisors (see below), whose sum is σ = 4203540000. Its totient is φ = 350106624.

The previous prime is 1269268043. The next prime is 1269268069. The reversal of 1269268056 is 6508629621.

It is an interprime number because it is at equal distance from previous prime (1269268043) and next prime (1269268069).

It is a super-2 number, since 2×1269268056² = 3222082795964038272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 126720 + ... + 136368.

It is an arithmetic number, because the mean of its divisors is an integer number (26272125).

Almost surely, 2^1269268056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1269268056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2101770000).

1269268056 is an abundant number, since it is smaller than the sum of its proper divisors (2934271944).

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

1269268056 is a wasteful number, since it uses less digits than its factorization.

1269268056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9703 (or 9690 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1269268056 is about 35626.7884603707. The cubic root of 1269268056 is about 1082.7240493669.

The spelling of 1269268056 in words is "one billion, two hundred sixty-nine million, two hundred sixty-eight thousand, fifty-six".