22433540 has 24 divisors (see below), whose sum is σ = 49882392. Its totient is φ = 8445440.

The previous prime is 22433539. The next prime is 22433561. The reversal of 22433540 is 4533422.

It can be written as a sum of positive squares in 4 ways, for example, as 7795264 + 14638276 = 2792^2 + 3826^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32651 + ... + 33330.

It is an arithmetic number, because the mean of its divisors is an integer number (2078433).

Almost surely, 2^22433540 is an apocalyptic number.

22433540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22433540 is an abundant number, since it is smaller than the sum of its proper divisors (27448852).

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

22433540 is a wasteful number, since it uses less digits than its factorization.

22433540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66007 (or 66005 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 22433540 is about 4736.4058103165. The cubic root of 22433540 is about 282.0325734048.

Adding to 22433540 its reverse (4533422), we get a palindrome (26966962).

The spelling of 22433540 in words is "twenty-two million, four hundred thirty-three thousand, five hundred forty".