1268870688 has 54 divisors (see below), whose sum is σ = 3610070919. Its totient is φ = 422755392.

The previous prime is 1268870683. The next prime is 1268870719. The reversal of 1268870688 is 8860788621.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 634435344 + 634435344 = 25188^2 + 25188^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25188.

It is a super-2 number, since 2×1268870688² = 3220065645731186688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1268870683) 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 8 ways as a sum of consecutive naturals, for example, 603463 + ... + 605561.

Almost surely, 2^1268870688 is an apocalyptic number.

1268870688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1268870688 is an abundant number, since it is smaller than the sum of its proper divisors (2341200231).

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

1268870688 is an frugal number, since it uses more digits than its factorization.

1268870688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4214 (or 2104 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The square root of 1268870688 is about 35621.2112090535. The cubic root of 1268870688 is about 1082.6110485987.

The spelling of 1268870688 in words is "one billion, two hundred sixty-eight million, eight hundred seventy thousand, six hundred eighty-eight".