9420220 has 24 divisors (see below), whose sum is σ = 20157984. Its totient is φ = 3696576.

The previous prime is 9420211. The next prime is 9420223. The reversal of 9420220 is 220249.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9420223) 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, 3384 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (839916).

Almost surely, 2^9420220 is an apocalyptic number.

It is an amenable number.

9420220 is an abundant number, since it is smaller than the sum of its proper divisors (10737764).

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

9420220 is a wasteful number, since it uses less digits than its factorization.

9420220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8949 (or 8947 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 9420220 is about 3069.2376903720. The cubic root of 9420220 is about 211.1966451392.

Adding to 9420220 its reverse (220249), we get a palindrome (9640469).

The spelling of 9420220 in words is "nine million, four hundred twenty thousand, two hundred twenty".