22024440 has 64 divisors (see below), whose sum is σ = 73418400. Its totient is φ = 5872896.

The previous prime is 22024423. The next prime is 22024459. The reversal of 22024440 is 4442022.

22024440 is a `hidden beast` number, since 220 + 2 + 4 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 9117 + ... + 11276.

Almost surely, 2^22024440 is an apocalyptic number.

22024440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22024440 is an abundant number, since it is smaller than the sum of its proper divisors (51393960).

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

22024440 is a wasteful number, since it uses less digits than its factorization.

22024440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20413 (or 20403 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 22024440 is about 4693.0203494125. The cubic root of 22024440 is about 280.3076550320.

Adding to 22024440 its reverse (4442022), we get a palindrome (26466462).

The spelling of 22024440 in words is "twenty-two million, twenty-four thousand, four hundred forty".