22219990 has 32 divisors (see below), whose sum is σ = 43817760. Its totient is φ = 8062464.

The previous prime is 22219979. The next prime is 22219993. The reversal of 22219990 is 9991222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22219993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6222 + ... + 9118.

It is an arithmetic number, because the mean of its divisors is an integer number (1369305).

Almost surely, 2^22219990 is an apocalyptic number.

22219990 is a deficient number, since it is larger than the sum of its proper divisors (21597770).

22219990 is a wasteful number, since it uses less digits than its factorization.

22219990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 22219990 is about 4713.8084390437. The cubic root of 22219990 is about 281.1348078063.

The spelling of 22219990 in words is "twenty-two million, two hundred nineteen thousand, nine hundred ninety".