265923868 has 48 divisors (see below), whose sum is σ = 557593344. Its totient is φ = 108581760.

The previous prime is 265923863. The next prime is 265923913. The reversal of 265923868 is 868329562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265923863) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 46671 + ... + 52057.

It is an arithmetic number, because the mean of its divisors is an integer number (11616528).

Almost surely, 2^265923868 is an apocalyptic number.

265923868 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 265923868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278796672).

265923868 is an abundant number, since it is smaller than the sum of its proper divisors (291669476).

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

265923868 is a wasteful number, since it uses less digits than its factorization.

265923868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5482 (or 5480 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 265923868 is about 16307.1722870644. The cubic root of 265923868 is about 643.0613971156.

The spelling of 265923868 in words is "two hundred sixty-five million, nine hundred twenty-three thousand, eight hundred sixty-eight".