265984992 has 384 divisors, whose sum is σ = 1016064000. Its totient is φ = 65691648.

The previous prime is 265984981. The next prime is 265984997. The reversal of 265984992 is 299489562.

It is a happy number.

265984992 is a `hidden beast` number, since 2 + 6 + 598 + 49 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265984997) 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 63 ways as a sum of consecutive naturals, for example, 1336509 + ... + 1336707.

It is an arithmetic number, because the mean of its divisors is an integer number (2646000).

Almost surely, 2^265984992 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 265984992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508032000).

265984992 is an abundant number, since it is smaller than the sum of its proper divisors (750079008).

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

265984992 is a wasteful number, since it uses less digits than its factorization.

265984992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 241 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 265984992 is about 16309.0463240497. The cubic root of 265984992 is about 643.1106636895.

The spelling of 265984992 in words is "two hundred sixty-five million, nine hundred eighty-four thousand, nine hundred ninety-two".