22066290 has 32 divisors (see below), whose sum is σ = 58844160. Its totient is φ = 5884272.

The previous prime is 22066259. The next prime is 22066321. The reversal of 22066290 is 9266022.

It is an interprime number because it is at equal distance from previous prime (22066259) and next prime (22066321).

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 15 ways as a sum of consecutive naturals, for example, 40594 + ... + 41133.

It is an arithmetic number, because the mean of its divisors is an integer number (1838880).

Almost surely, 2^22066290 is an apocalyptic number.

22066290 is an abundant number, since it is smaller than the sum of its proper divisors (36777870).

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

22066290 is a wasteful number, since it uses less digits than its factorization.

22066290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81743 (or 81737 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 22066290 is about 4697.4769823811. The cubic root of 22066290 is about 280.4850859982.

The spelling of 22066290 in words is "twenty-two million, sixty-six thousand, two hundred ninety".