426406266 has 72 divisors (see below), whose sum is σ = 1091447136. Its totient is φ = 119265120.

The previous prime is 426406261. The next prime is 426406283. The reversal of 426406266 is 662604624.

426406266 is a `hidden beast` number, since 4 + 2 + 640 + 6 + 2 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 426406266.

It is not an unprimeable number, because it can be changed into a prime (426406261) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27091 + ... + 39833.

It is an arithmetic number, because the mean of its divisors is an integer number (15158988).

Almost surely, 2^426406266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426406266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (545723568).

426406266 is an abundant number, since it is smaller than the sum of its proper divisors (665040870).

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

426406266 is a wasteful number, since it uses less digits than its factorization.

426406266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12788 (or 12772 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 426406266 is about 20649.6069211983. The cubic root of 426406266 is about 752.6756379311.

The spelling of 426406266 in words is "four hundred twenty-six million, four hundred six thousand, two hundred sixty-six".