4247220 has 48 divisors (see below), whose sum is σ = 12071808. Its totient is φ = 1115520.

The previous prime is 4247209. The next prime is 4247227. The reversal of 4247220 is 227424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4247227) 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, 3762 + ... + 4758.

It is an arithmetic number, because the mean of its divisors is an integer number (251496).

Almost surely, 2^4247220 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 4247220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6035904).

4247220 is an abundant number, since it is smaller than the sum of its proper divisors (7824588).

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

4247220 is a wasteful number, since it uses less digits than its factorization.

4247220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 4247220 is about 2060.8784534756. The cubic root of 4247220 is about 161.9452642395.

The spelling of 4247220 in words is "four million, two hundred forty-seven thousand, two hundred twenty".