269264640 has 72 divisors (see below), whose sum is σ = 859976208. Its totient is φ = 71802880.

The previous prime is 269264629. The next prime is 269264641. The reversal of 269264640 is 46462962.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (269264641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31221 + ... + 38900.

It is an arithmetic number, because the mean of its divisors is an integer number (11944114).

Almost surely, 2^269264640 is an apocalyptic number.

269264640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

269264640 is an abundant number, since it is smaller than the sum of its proper divisors (590711568).

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

269264640 is an equidigital number, since it uses as much as digits as its factorization.

269264640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70145 (or 70131 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 269264640 is about 16409.2851763872. The cubic root of 269264640 is about 645.7431012429.

The spelling of 269264640 in words is "two hundred sixty-nine million, two hundred sixty-four thousand, six hundred forty".