266256736 has 48 divisors (see below), whose sum is σ = 548647344. Its totient is φ = 127056384.

The previous prime is 266256721. The next prime is 266256791. The reversal of 266256736 is 637652662.

It is a junction number, because it is equal to n+sod(n) for n = 266256692 and 266256701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60631 + ... + 64873.

It is an arithmetic number, because the mean of its divisors is an integer number (11430153).

Almost surely, 2^266256736 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 266256736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274323672).

266256736 is an abundant number, since it is smaller than the sum of its proper divisors (282390608).

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

266256736 is a wasteful number, since it uses less digits than its factorization.

266256736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343 (or 4335 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The square root of 266256736 is about 16317.3752791311. The cubic root of 266256736 is about 643.3296008327.

The spelling of 266256736 in words is "two hundred sixty-six million, two hundred fifty-six thousand, seven hundred thirty-six".