22068819 has 12 divisors (see below), whose sum is σ = 31924776. Its totient is φ = 14690592.

The previous prime is 22068793. The next prime is 22068881. The reversal of 22068819 is 91886022.

It is not a de Polignac number, because 22068819 - 2⁹ = 22068307 is a prime.

It is a super-2 number, since 2×22068819² = 974065544109522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22068889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6559 + ... + 9335.

It is an arithmetic number, because the mean of its divisors is an integer number (2660398).

Almost surely, 2^22068819 is an apocalyptic number.

22068819 is a deficient number, since it is larger than the sum of its proper divisors (9855957).

22068819 is a wasteful number, since it uses less digits than its factorization.

22068819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666 (or 3663 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 22068819 is about 4697.7461617248. The cubic root of 22068819 is about 280.4958009800.

It can be divided in two parts, 2206 and 8819, that added together give a square (11025 = 105²).

The spelling of 22068819 in words is "twenty-two million, sixty-eight thousand, eight hundred nineteen".