22190290 has 16 divisors (see below), whose sum is σ = 42045120. Its totient is φ = 8408880.

The previous prime is 22190261. The next prime is 22190297. The reversal of 22190290 is 9209122.

It is not an unprimeable number, because it can be changed into a prime (22190297) 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 7 ways as a sum of consecutive naturals, for example, 58206 + ... + 58585.

It is an arithmetic number, because the mean of its divisors is an integer number (2627820).

Almost surely, 2^22190290 is an apocalyptic number.

22190290 is a deficient number, since it is larger than the sum of its proper divisors (19854830).

22190290 is a wasteful number, since it uses less digits than its factorization.

22190290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116817.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 22190290 is about 4710.6570666946. The cubic root of 22190290 is about 281.0094938177.

The spelling of 22190290 in words is "twenty-two million, one hundred ninety thousand, two hundred ninety".