22781024 has 24 divisors (see below), whose sum is σ = 51257808. Its totient is φ = 9763200.

The previous prime is 22781009. The next prime is 22781029. The reversal of 22781024 is 42018722.

It is a junction number, because it is equal to n+sod(n) for n = 22780984 and 22781002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22781029) 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, 50627 + ... + 51074.

It is an arithmetic number, because the mean of its divisors is an integer number (2135742).

Almost surely, 2^22781024 is an apocalyptic number.

It is an amenable number.

22781024 is an abundant number, since it is smaller than the sum of its proper divisors (28476784).

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

22781024 is a wasteful number, since it uses less digits than its factorization.

22781024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101718 (or 101710 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 22781024 is about 4772.9470979679. The cubic root of 22781024 is about 283.4812988005.

Adding to 22781024 its reverse (42018722), we get a palindrome (64799746).

The spelling of 22781024 in words is "twenty-two million, seven hundred eighty-one thousand, twenty-four".