22290084 has 18 divisors (see below), whose sum is σ = 56344470. Its totient is φ = 7430016.

The previous prime is 22290083. The next prime is 22290109. The reversal of 22290084 is 48009222.

It can be written as a sum of positive squares in only one way, i.e., 18249984 + 4040100 = 4272^2 + 2010^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (22290083) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 309549 + ... + 309620.

Almost surely, 2^22290084 is an apocalyptic number.

It is an amenable number.

22290084 is an abundant number, since it is smaller than the sum of its proper divisors (34054386).

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

22290084 is a wasteful number, since it uses less digits than its factorization.

22290084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619179 (or 619174 counting only the distinct ones).

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

The square root of 22290084 is about 4721.2375496262. The cubic root of 22290084 is about 281.4301151465.

The spelling of 22290084 in words is "twenty-two million, two hundred ninety thousand, eighty-four".