22247790 has 16 divisors (see below), whose sum is σ = 53394768. Its totient is φ = 5932736.

The previous prime is 22247773. The next prime is 22247791. The reversal of 22247790 is 9774222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22247791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370767 + ... + 370826.

It is an arithmetic number, because the mean of its divisors is an integer number (3337173).

Almost surely, 2^22247790 is an apocalyptic number.

22247790 is an abundant number, since it is smaller than the sum of its proper divisors (31146978).

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

22247790 is a wasteful number, since it uses less digits than its factorization.

22247790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741603.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 22247790 is about 4716.7563006795. The cubic root of 22247790 is about 281.2520039363.

The spelling of 22247790 in words is "twenty-two million, two hundred forty-seven thousand, seven hundred ninety".