22040144 has 40 divisors (see below), whose sum is σ = 49038528. Its totient is φ = 9400320.

The previous prime is 22040113. The next prime is 22040147. The reversal of 22040144 is 44104022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040147) 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, 34064 + ... + 34704.

Almost surely, 2^22040144 is an apocalyptic number.

It is an amenable number.

22040144 is an abundant number, since it is smaller than the sum of its proper divisors (26998384).

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

22040144 is a wasteful number, since it uses less digits than its factorization.

22040144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 22040144 is about 4694.6931742128. The cubic root of 22040144 is about 280.3742614261.

Adding to 22040144 its reverse (44104022), we get a palindrome (66144166).

The spelling of 22040144 in words is "twenty-two million, forty thousand, one hundred forty-four".