266543040 has 112 divisors (see below), whose sum is σ = 854964000. Its totient is φ = 70348800.

The previous prime is 266543033. The next prime is 266543047. The reversal of 266543040 is 40345662.

266543040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (266543033) and next prime (266543047).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 266542989 and 266543007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266543047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95586 + ... + 98334.

Almost surely, 2^266543040 is an apocalyptic number.

266543040 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 266543040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427482000).

266543040 is an abundant number, since it is smaller than the sum of its proper divisors (588420960).

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

266543040 is a wasteful number, since it uses less digits than its factorization.

266543040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870 (or 2860 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 266543040 is about 16326.1459015899. The cubic root of 266543040 is about 643.5601075002.

The spelling of 266543040 in words is "two hundred sixty-six million, five hundred forty-three thousand, forty".