22023456 has 96 divisors (see below), whose sum is σ = 71180928. Its totient is φ = 5806080.

The previous prime is 22023431. The next prime is 22023457. The reversal of 22023456 is 65432022.

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

It is a super-2 number, since 2×22023456² = 970065228367872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22023457) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7476 + ... + 9996.

It is an arithmetic number, because the mean of its divisors is an integer number (741468).

Almost surely, 2^22023456 is an apocalyptic number.

22023456 is a gapful number since it is divisible by the number (26) 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 22023456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35590464).

22023456 is an abundant number, since it is smaller than the sum of its proper divisors (49157472).

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

22023456 is a wasteful number, since it uses less digits than its factorization.

22023456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 22023456 is about 4692.9155117049. The cubic root of 22023456 is about 280.3034804750.

Adding to 22023456 its reverse (65432022), we get a palindrome (87455478).

The spelling of 22023456 in words is "twenty-two million, twenty-three thousand, four hundred fifty-six".