266444160 has 128 divisors (see below), whose sum is σ = 861377760. Its totient is φ = 70041600.

The previous prime is 266444153. The next prime is 266444173. The reversal of 266444160 is 61444662.

266444160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139210 + ... + 141110.

Almost surely, 2^266444160 is an apocalyptic number.

266444160 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 266444160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430688880).

266444160 is an abundant number, since it is smaller than the sum of its proper divisors (594933600).

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

266444160 is a wasteful number, since it uses less digits than its factorization.

266444160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996 (or 1984 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 266444160 is about 16323.1173493301. The cubic root of 266444160 is about 643.4805167345.

The spelling of 266444160 in words is "two hundred sixty-six million, four hundred forty-four thousand, one hundred sixty".