426534220 has 96 divisors (see below), whose sum is σ = 1056988800. Its totient is φ = 144506880.

The previous prime is 426534203. The next prime is 426534253. The reversal of 426534220 is 22435624.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 665100 + ... + 665740.

It is an arithmetic number, because the mean of its divisors is an integer number (11010300).

Almost surely, 2^426534220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426534220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528494400).

426534220 is an abundant number, since it is smaller than the sum of its proper divisors (630454580).

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

426534220 is a wasteful number, since it uses less digits than its factorization.

426534220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 426534220 is about 20652.7049075902. The cubic root of 426534220 is about 752.7509168647.

Adding to 426534220 its reverse (22435624), we get a palindrome (448969844).

The spelling of 426534220 in words is "four hundred twenty-six million, five hundred thirty-four thousand, two hundred twenty".