266225340 has 96 divisors (see below), whose sum is σ = 788094720. Its totient is φ = 66963456.

The previous prime is 266225317. The next prime is 266225347. The reversal of 266225340 is 43522662.

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

It is a junction number, because it is equal to n+sod(n) for n = 266225298 and 266225307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266225347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395244 + ... + 395916.

It is an arithmetic number, because the mean of its divisors is an integer number (8209320).

Almost surely, 2^266225340 is an apocalyptic number.

266225340 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 266225340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394047360).

266225340 is an abundant number, since it is smaller than the sum of its proper divisors (521869380).

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

266225340 is a wasteful number, since it uses less digits than its factorization.

266225340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1049 counting only the distinct ones).

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

The square root of 266225340 is about 16316.4132087907. The cubic root of 266225340 is about 643.3043134973.

The spelling of 266225340 in words is "two hundred sixty-six million, two hundred twenty-five thousand, three hundred forty".