220402422 has 24 divisors (see below), whose sum is σ = 498302064. Its totient is φ = 70273104.

The previous prime is 220402421. The next prime is 220402423. The reversal of 220402422 is 224204022.

220402422 is a `hidden beast` number, since 220 + 402 + 42 + 2 = 666.

220402422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220402421) and next prime (220402423).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220402395 and 220402404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220402421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265773 + ... + 266600.

It is an arithmetic number, because the mean of its divisors is an integer number (20762586).

Almost surely, 2^220402422 is an apocalyptic number.

220402422 is an abundant number, since it is smaller than the sum of its proper divisors (277899642).

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

220402422 is a wasteful number, since it uses less digits than its factorization.

220402422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532404 (or 532401 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 220402422 is about 14845.9564191735. The cubic root of 220402422 is about 604.0489321204.

Adding to 220402422 its reverse (224204022), we get a palindrome (444606444).

The spelling of 220402422 in words is "two hundred twenty million, four hundred two thousand, four hundred twenty-two".