265879872 has 84 divisors (see below), whose sum is σ = 771875520. Its totient is φ = 87489792.

The previous prime is 265879871. The next prime is 265879897. The reversal of 265879872 is 278978562.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265879871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42583 + ... + 48425.

Almost surely, 2^265879872 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 265879872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385937760).

265879872 is an abundant number, since it is smaller than the sum of its proper divisors (505995648).

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

265879872 is a wasteful number, since it uses less digits than its factorization.

265879872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5940 (or 5927 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 265879872 is about 16305.8232542856. The cubic root of 265879872 is about 643.0259312135.

The spelling of 265879872 in words is "two hundred sixty-five million, eight hundred seventy-nine thousand, eight hundred seventy-two".