4223840 has 24 divisors (see below), whose sum is σ = 9979200. Its totient is φ = 1689472.

The previous prime is 4223839. The next prime is 4223873. The reversal of 4223840 is 483224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13040 + ... + 13359.

It is an arithmetic number, because the mean of its divisors is an integer number (415800).

Almost surely, 2^4223840 is an apocalyptic number.

4223840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4223840 is an abundant number, since it is smaller than the sum of its proper divisors (5755360).

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

4223840 is a wasteful number, since it uses less digits than its factorization.

4223840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26414 (or 26406 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4223840 is about 2055.1982872706. The cubic root of 4223840 is about 161.6475597688.

The spelling of 4223840 in words is "four million, two hundred twenty-three thousand, eight hundred forty".