4289220 has 144 divisors (see below), whose sum is σ = 14757120. Its totient is φ = 1033344.

The previous prime is 4289213. The next prime is 4289239. The reversal of 4289220 is 229824.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91237 + ... + 91283.

It is an arithmetic number, because the mean of its divisors is an integer number (102480).

Almost surely, 2^4289220 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 4289220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7378560).

4289220 is an abundant number, since it is smaller than the sum of its proper divisors (10467900).

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

4289220 is a wasteful number, since it uses less digits than its factorization.

4289220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 4289220 is about 2071.0432153869. The cubic root of 4289220 is about 162.4773301709.

The spelling of 4289220 in words is "four million, two hundred eighty-nine thousand, two hundred twenty".