4223240 has 32 divisors (see below), whose sum is σ = 10860480. Its totient is φ = 1447872.

The previous prime is 4223239. The next prime is 4223243. The reversal of 4223240 is 423224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7262 + ... + 7821.

It is an arithmetic number, because the mean of its divisors is an integer number (339390).

Almost surely, 2^4223240 is an apocalyptic number.

4223240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4223240 is an abundant number, since it is smaller than the sum of its proper divisors (6637240).

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

4223240 is a wasteful number, since it uses less digits than its factorization.

4223240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15101 (or 15097 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 4223240 is about 2055.0523107697. The cubic root of 4223240 is about 161.6399053494.

Adding to 4223240 its reverse (423224), we get a palindrome (4646464).

The spelling of 4223240 in words is "four million, two hundred twenty-three thousand, two hundred forty".