4392220 has 48 divisors (see below), whose sum is σ = 10664640. Its totient is φ = 1488384.

The previous prime is 4392217. The next prime is 4392221. The reversal of 4392220 is 222934.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 4392191 and 4392200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4392221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19066 + ... + 19294.

It is an arithmetic number, because the mean of its divisors is an integer number (222180).

Almost surely, 2^4392220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4392220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5332320).

4392220 is an abundant number, since it is smaller than the sum of its proper divisors (6272420).

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

4392220 is a wasteful number, since it uses less digits than its factorization.

4392220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 4392220 is about 2095.7623911121. The cubic root of 4392220 is about 163.7676165419.

The spelling of 4392220 in words is "four million, three hundred ninety-two thousand, two hundred twenty".