428222113 has 4 divisors (see below), whose sum is σ = 467151408. Its totient is φ = 389292820.

The previous prime is 428222089. The next prime is 428222131. The reversal of 428222113 is 311222824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428222113 - 2¹³ = 428213921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428222143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19464631 + ... + 19464652.

It is an arithmetic number, because the mean of its divisors is an integer number (116787852).

Almost surely, 2^428222113 is an apocalyptic number.

It is an amenable number.

428222113 is a deficient number, since it is larger than the sum of its proper divisors (38929295).

428222113 is a wasteful number, since it uses less digits than its factorization.

428222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38929294.

The product of its digits is 1536, while the sum is 25.

The square root of 428222113 is about 20693.5282878488. The cubic root of 428222113 is about 753.7425455545.

Adding to 428222113 its reverse (311222824), we get a palindrome (739444937).

The spelling of 428222113 in words is "four hundred twenty-eight million, two hundred twenty-two thousand, one hundred thirteen".