22464420 has 96 divisors (see below), whose sum is σ = 69503616. Its totient is φ = 5376000.

The previous prime is 22464413. The next prime is 22464443. The reversal of 22464420 is 2446422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66492 + ... + 66828.

It is an arithmetic number, because the mean of its divisors is an integer number (723996).

Almost surely, 2^22464420 is an apocalyptic number.

22464420 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 22464420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34751808).

22464420 is an abundant number, since it is smaller than the sum of its proper divisors (47039196).

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

22464420 is a wasteful number, since it uses less digits than its factorization.

22464420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 22464420 is about 4739.6645450918. The cubic root of 22464420 is about 282.1619209923.

It can be divided in two parts, 2246 and 4420, that added together give a palindrome (6666).

The spelling of 22464420 in words is "twenty-two million, four hundred sixty-four thousand, four hundred twenty".