22023140 has 24 divisors (see below), whose sum is σ = 47500152. Its totient is φ = 8570880.

The previous prime is 22023091. The next prime is 22023149. The reversal of 22023140 is 4132022.

It can be written as a sum of positive squares in 4 ways, for example, as 2715904 + 19307236 = 1648^2 + 4394^2 .

It is not an unprimeable number, because it can be changed into a prime (22023149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14141 + ... + 15620.

It is an arithmetic number, because the mean of its divisors is an integer number (1979173).

Almost surely, 2^22023140 is an apocalyptic number.

22023140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22023140 is an abundant number, since it is smaller than the sum of its proper divisors (25477012).

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

22023140 is a wasteful number, since it uses less digits than its factorization.

22023140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29807 (or 29805 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22023140 is about 4692.8818438141. The cubic root of 22023140 is about 280.3021398388.

Adding to 22023140 its reverse (4132022), we get a palindrome (26155162).

The spelling of 22023140 in words is "twenty-two million, twenty-three thousand, one hundred forty".