22007140 has 12 divisors (see below), whose sum is σ = 46215036. Its totient is φ = 8802848.

The previous prime is 22007123. The next prime is 22007173. The reversal of 22007140 is 4170022.

It can be written as a sum of positive squares in 2 ways, for example, as 16208676 + 5798464 = 4026^2 + 2408^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550159 + ... + 550198.

It is an arithmetic number, because the mean of its divisors is an integer number (3851253).

Almost surely, 2^22007140 is an apocalyptic number.

22007140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22007140 is an abundant number, since it is smaller than the sum of its proper divisors (24207896).

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

22007140 is a wasteful number, since it uses less digits than its factorization.

22007140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100366 (or 1100364 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 22007140 is about 4691.1768246358. The cubic root of 22007140 is about 280.2342427578.

Adding to 22007140 its reverse (4170022), we get a palindrome (26177162).

The spelling of 22007140 in words is "twenty-two million, seven thousand, one hundred forty".