4223040 has 112 divisors (see below), whose sum is σ = 13825728. Its totient is φ = 1091584.

The previous prime is 4223029. The next prime is 4223057. The reversal of 4223040 is 403224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50839 + ... + 50921.

It is an arithmetic number, because the mean of its divisors is an integer number (123444).

Almost surely, 2^4223040 is an apocalyptic number.

4223040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6912864).

4223040 is an abundant number, since it is smaller than the sum of its proper divisors (9602688).

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

4223040 is a wasteful number, since it uses less digits than its factorization.

4223040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 4223040 is about 2055.0036496318. The cubic root of 4223040 is about 161.6373537151.

Subtracting from 4223040 its sum of digits (15), we obtain a square (4223025 = 2055²).

Adding to 4223040 its reverse (403224), we get a palindrome (4626264).

The spelling of 4223040 in words is "four million, two hundred twenty-three thousand, forty".