22490776 has 64 divisors (see below), whose sum is σ = 54432000. Its totient is φ = 8453760.

The previous prime is 22490773. The next prime is 22490827. The reversal of 22490776 is 67709422.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22490773) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17235 + ... + 18493.

It is an arithmetic number, because the mean of its divisors is an integer number (850500).

Almost surely, 2^22490776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22490776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27216000).

22490776 is an abundant number, since it is smaller than the sum of its proper divisors (31941224).

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

22490776 is a wasteful number, since it uses less digits than its factorization.

22490776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 22490776 is about 4742.4440956115. Note that the first 3 decimals coincide. The cubic root of 22490776 is about 282.2722250965.

The spelling of 22490776 in words is "twenty-two million, four hundred ninety thousand, seven hundred seventy-six".