22881042 has 20 divisors (see below), whose sum is σ = 51270846. Its totient is φ = 7626960.

The previous prime is 22881013. The next prime is 22881049. The reversal of 22881042 is 24018822.

It can be written as a sum of positive squares in only one way, i.e., 15046641 + 7834401 = 3879^2 + 2799^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22880997 and 22881015.

It is not an unprimeable number, because it can be changed into a prime (22881049) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 70459 + ... + 70782.

Almost surely, 2^22881042 is an apocalyptic number.

22881042 is an abundant number, since it is smaller than the sum of its proper divisors (28389804).

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

22881042 is a wasteful number, since it uses less digits than its factorization.

22881042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141255 (or 141246 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 22881042 is about 4783.4132165223. The cubic root of 22881042 is about 283.8955593618.

Adding to 22881042 its reverse (24018822), we get a palindrome (46899864).

The spelling of 22881042 in words is "twenty-two million, eight hundred eighty-one thousand, forty-two".