22163040 has 72 divisors (see below), whose sum is σ = 75636288. Its totient is φ = 5909760.

The previous prime is 22163039. The next prime is 22163041. The reversal of 22163040 is 4036122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22163039) and next prime (22163041).

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22163041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6256 + ... + 9135.

It is an arithmetic number, because the mean of its divisors is an integer number (1050504).

Almost surely, 2^22163040 is an apocalyptic number.

22163040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22163040 is an abundant number, since it is smaller than the sum of its proper divisors (53473248).

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

22163040 is a wasteful number, since it uses less digits than its factorization.

22163040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15412 (or 15401 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22163040 is about 4707.7638003621. The cubic root of 22163040 is about 280.8944187803.

Adding to 22163040 its reverse (4036122), we get a palindrome (26199162).

The spelling of 22163040 in words is "twenty-two million, one hundred sixty-three thousand, forty".