266400456 has 48 divisors (see below), whose sum is σ = 774739440. Its totient is φ = 76114080.

The previous prime is 266400443. The next prime is 266400457. The reversal of 266400456 is 654004662.

266400456 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (266400457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112090 + ... + 114441.

It is an arithmetic number, because the mean of its divisors is an integer number (16140405).

Almost surely, 2^266400456 is an apocalyptic number.

It is an amenable number.

266400456 is an abundant number, since it is smaller than the sum of its proper divisors (508338984).

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

266400456 is a wasteful number, since it uses less digits than its factorization.

266400456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226554 (or 226543 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 266400456 is about 16321.7785795544. The cubic root of 266400456 is about 643.4453321136.

The spelling of 266400456 in words is "two hundred sixty-six million, four hundred thousand, four hundred fifty-six".