4222640420 has 24 divisors (see below), whose sum is σ = 9073768704. Its totient is φ = 1649775456.

The previous prime is 4222640419. The next prime is 4222640423. The reversal of 4222640420 is 240462224.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4222640420.

It is not an unprimeable number, because it can be changed into a prime (4222640423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2454164 + ... + 2455883.

It is an arithmetic number, because the mean of its divisors is an integer number (378073696).

Almost surely, 2^4222640420 is an apocalyptic number.

It is an amenable number.

4222640420 is an abundant number, since it is smaller than the sum of its proper divisors (4851128284).

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

4222640420 is a wasteful number, since it uses less digits than its factorization.

4222640420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4910099 (or 4910097 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 4222640420 is about 64981.8468497164. The cubic root of 4222640420 is about 1616.3225556382.

The spelling of 4222640420 in words is "four billion, two hundred twenty-two million, six hundred forty thousand, four hundred twenty".