4235220 has 192 divisors, whose sum is σ = 15482880. Its totient is φ = 950400.

The previous prime is 4235201. The next prime is 4235237. The reversal of 4235220 is 225324.

Added to its reverse (225324) it gives a square (4460544 = 2112²).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 4⁶ + 2⁷ + 3⁹ + 5⁴ + 2¹⁴ + 2²² + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 4235193 and 4235202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 136605 + ... + 136635.

It is an arithmetic number, because the mean of its divisors is an integer number (80640).

Almost surely, 2^4235220 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 4235220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7741440).

4235220 is an abundant number, since it is smaller than the sum of its proper divisors (11247660).

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

4235220 is a wasteful number, since it uses less digits than its factorization.

4235220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4235220 is about 2057.9650142799. The cubic root of 4235220 is about 161.7926015350.

Adding to 4235220 its reverse (225324), we get a square (4460544 = 2112²).

The spelling of 4235220 in words is "four million, two hundred thirty-five thousand, two hundred twenty".