22447790 has 8 divisors (see below), whose sum is σ = 40406040. Its totient is φ = 8979112.

The previous prime is 22447783. The next prime is 22447807. The reversal of 22447790 is 9774422.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22447790.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122380 + ... + 1122399.

It is an arithmetic number, because the mean of its divisors is an integer number (5050755).

Almost surely, 2^22447790 is an apocalyptic number.

22447790 is a deficient number, since it is larger than the sum of its proper divisors (17958250).

22447790 is a wasteful number, since it uses less digits than its factorization.

22447790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244786.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 22447790 is about 4737.9098767283. The cubic root of 22447790 is about 282.0922773646.

The spelling of 22447790 in words is "twenty-two million, four hundred forty-seven thousand, seven hundred ninety".