428226286 has 4 divisors (see below), whose sum is σ = 642339432. Its totient is φ = 214113142.

The previous prime is 428226247. The next prime is 428226287. The reversal of 428226286 is 682622824.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428226287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107056570 + ... + 107056573.

It is an arithmetic number, because the mean of its divisors is an integer number (160584858).

Almost surely, 2^428226286 is an apocalyptic number.

428226286 is a deficient number, since it is larger than the sum of its proper divisors (214113146).

428226286 is a wasteful number, since it uses less digits than its factorization.

428226286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214113145.

The product of its digits is 147456, while the sum is 40.

The square root of 428226286 is about 20693.6291162280. The cubic root of 428226286 is about 753.7449939392.

The spelling of 428226286 in words is "four hundred twenty-eight million, two hundred twenty-six thousand, two hundred eighty-six".