265940416 has 112 divisors (see below), whose sum is σ = 642112000. Its totient is φ = 106748928.

The previous prime is 265940357. The next prime is 265940447. The reversal of 265940416 is 614049562.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

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, 1336285 + ... + 1336483.

Almost surely, 2^265940416 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 265940416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321056000).

265940416 is an abundant number, since it is smaller than the sum of its proper divisors (376171584).

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

265940416 is a wasteful number, since it uses less digits than its factorization.

265940416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 265940416 is about 16307.6796632752. The cubic root of 265940416 is about 643.0747357194.

Adding to 265940416 its reverse (614049562), we get a palindrome (879989978).

The spelling of 265940416 in words is "two hundred sixty-five million, nine hundred forty thousand, four hundred sixteen".