22681026 has 64 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 6877440.

The previous prime is 22681019. The next prime is 22681031. The reversal of 22681026 is 62018622.

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

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 31 ways as a sum of consecutive naturals, for example, 28060 + ... + 28856.

It is an arithmetic number, because the mean of its divisors is an integer number (861840).

Almost surely, 2^22681026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22681026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27578880).

22681026 is an abundant number, since it is smaller than the sum of its proper divisors (32476734).

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

22681026 is a wasteful number, since it uses less digits than its factorization.

22681026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22681026 is about 4762.4600785728. The cubic root of 22681026 is about 283.0659071444.

Adding to 22681026 its reverse (62018622), we get a palindrome (84699648).

The spelling of 22681026 in words is "twenty-two million, six hundred eighty-one thousand, twenty-six".