22881018 has 8 divisors (see below), whose sum is σ = 45762048. Its totient is φ = 7627004.

The previous prime is 22881013. The next prime is 22881049. The reversal of 22881018 is 81018822.

It is a sphenic number, since it is the product of 3 distinct primes.

22881018 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22881011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906746 + ... + 1906757.

It is an arithmetic number, because the mean of its divisors is an integer number (5720256).

Almost surely, 2^22881018 is an apocalyptic number.

22881018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22881018 is a wasteful number, since it uses less digits than its factorization.

22881018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813508.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 22881018 is about 4783.4107078527. The cubic root of 22881018 is about 283.8954601021.

The spelling of 22881018 in words is "twenty-two million, eight hundred eighty-one thousand, eighteen".