22422040 has 16 divisors (see below), whose sum is σ = 50449680. Its totient is φ = 8968800.

The previous prime is 22422007. The next prime is 22422041. The reversal of 22422040 is 4022422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22422041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280236 + ... + 280315.

It is an arithmetic number, because the mean of its divisors is an integer number (3153105).

Almost surely, 2^22422040 is an apocalyptic number.

22422040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22422040 is an abundant number, since it is smaller than the sum of its proper divisors (28027640).

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

22422040 is a wasteful number, since it uses less digits than its factorization.

22422040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560562 (or 560558 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22422040 is about 4735.1916539883. The cubic root of 22422040 is about 281.9843728242.

Adding to 22422040 its reverse (4022422), we get a palindrome (26444462).

The spelling of 22422040 in words is "twenty-two million, four hundred twenty-two thousand, forty".