201228426 has 72 divisors (see below), whose sum is σ = 521058720. Its totient is φ = 54975888.

The previous prime is 201228407. The next prime is 201228427. The reversal of 201228426 is 624822102.

It is a happy number.

201228426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 201228426.

It is not an unprimeable number, because it can be changed into a prime (201228427) 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, 65145 + ... + 68163.

Almost surely, 2^201228426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201228426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260529360).

201228426 is an abundant number, since it is smaller than the sum of its proper divisors (319830294).

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

201228426 is a wasteful number, since it uses less digits than its factorization.

201228426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080 (or 3054 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 201228426 is about 14185.5005551443. The cubic root of 201228426 is about 585.9984177603.

The spelling of 201228426 in words is "two hundred one million, two hundred twenty-eight thousand, four hundred twenty-six".