22621828 has 12 divisors (see below), whose sum is σ = 39755520. Its totient is φ = 11263112.

The previous prime is 22621817. The next prime is 22621861. The reversal of 22621828 is 82812622.

It is a self number, because there is not a number n which added to its sum of digits gives 22621828.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10876 + ... + 12787.

It is an arithmetic number, because the mean of its divisors is an integer number (3312960).

Almost surely, 2^22621828 is an apocalyptic number.

It is an amenable number.

22621828 is a deficient number, since it is larger than the sum of its proper divisors (17133692).

22621828 is a wasteful number, since it uses less digits than its factorization.

22621828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23906 (or 23904 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 22621828 is about 4756.2409526852. The cubic root of 22621828 is about 282.8194230655.

The spelling of 22621828 in words is "twenty-two million, six hundred twenty-one thousand, eight hundred twenty-eight".