4233440 has 24 divisors (see below), whose sum is σ = 10001880. Its totient is φ = 1693312.

The previous prime is 4233433. The next prime is 4233457. The reversal of 4233440 is 443324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a d-powerful number, because it can be written as 4 + 2¹⁵ + 3⁴ + 3⁷ + 4⁶ + 4¹¹ + 0 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13070 + ... + 13389.

It is an arithmetic number, because the mean of its divisors is an integer number (416745).

Almost surely, 2^4233440 is an apocalyptic number.

4233440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4233440 is an abundant number, since it is smaller than the sum of its proper divisors (5768440).

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

4233440 is a wasteful number, since it uses less digits than its factorization.

4233440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26474 (or 26466 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 4233440 is about 2057.5325027809. The cubic root of 4233440 is about 161.7699320172.

Adding to 4233440 its reverse (443324), we get a palindrome (4676764).

The spelling of 4233440 in words is "four million, two hundred thirty-three thousand, four hundred forty".