4023822 has 32 divisors (see below), whose sum is σ = 8999424. Its totient is φ = 1188800.

The previous prime is 4023821. The next prime is 4023829. The reversal of 4023822 is 2283204.

It is a super-2 number, since 2×4023822² = 32382286975368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1963 + ... + 3449.

It is an arithmetic number, because the mean of its divisors is an integer number (281232).

Almost surely, 2^4023822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4023822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4499712).

4023822 is an abundant number, since it is smaller than the sum of its proper divisors (4975602).

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

4023822 is a wasteful number, since it uses less digits than its factorization.

4023822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4023822 is about 2005.9466593108. The cubic root of 4023822 is about 159.0546072472.

It can be divided in two parts, 402 and 3822, that added together give a palindrome (4224).

The spelling of 4023822 in words is "four million, twenty-three thousand, eight hundred twenty-two".