22023840 has 96 divisors (see below), whose sum is σ = 73483200. Its totient is φ = 5525504.

The previous prime is 22023829. The next prime is 22023853. The reversal of 22023840 is 4832022.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6811 + ... + 9509.

It is an arithmetic number, because the mean of its divisors is an integer number (765450).

Almost surely, 2^22023840 is an apocalyptic number.

22023840 is a gapful number since it is divisible by the number (20) 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 22023840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36741600).

22023840 is an abundant number, since it is smaller than the sum of its proper divisors (51459360).

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

22023840 is a wasteful number, since it uses less digits than its factorization.

22023840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734 (or 2726 counting only the distinct ones).

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

The square root of 22023840 is about 4692.9564242597. The cubic root of 22023840 is about 280.3051095852.

Adding to 22023840 its reverse (4832022), we get a palindrome (26855862).

The spelling of 22023840 in words is "twenty-two million, twenty-three thousand, eight hundred forty".