265853940 has 96 divisors (see below), whose sum is σ = 819020160. Its totient is φ = 64430080.

The previous prime is 265853927. The next prime is 265853971. The reversal of 265853940 is 49358562.

It is a junction number, because it is equal to n+sod(n) for n = 265853892 and 265853901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78196 + ... + 81524.

It is an arithmetic number, because the mean of its divisors is an integer number (8531460).

Almost surely, 2^265853940 is an apocalyptic number.

265853940 is a gapful number since it is divisible by the number (20) 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 265853940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409510080).

265853940 is an abundant number, since it is smaller than the sum of its proper divisors (553166220).

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

265853940 is a wasteful number, since it uses less digits than its factorization.

265853940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374 (or 3350 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 265853940 is about 16305.0280588535. The cubic root of 265853940 is about 643.0050251674.

The spelling of 265853940 in words is "two hundred sixty-five million, eight hundred fifty-three thousand, nine hundred forty".