269138688 has 144 divisors (see below), whose sum is σ = 881830656. Its totient is φ = 70963200.

The previous prime is 269138657. The next prime is 269138689. The reversal of 269138688 is 886831962.

It is a super-2 number, since 2×269138688² = 144871266756722688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 269138688.

It is not an unprimeable number, because it can be changed into a prime (269138689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67963 + ... + 71813.

It is an arithmetic number, because the mean of its divisors is an integer number (6123824).

Almost surely, 2^269138688 is an apocalyptic number.

269138688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 269138688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440915328).

269138688 is an abundant number, since it is smaller than the sum of its proper divisors (612691968).

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

269138688 is a wasteful number, since it uses less digits than its factorization.

269138688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890 (or 3876 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 269138688 is about 16405.4469003438. The cubic root of 269138688 is about 645.6424006584.

The spelling of 269138688 in words is "two hundred sixty-nine million, one hundred thirty-eight thousand, six hundred eighty-eight".