22050990 has 96 divisors (see below), whose sum is σ = 63213696. Its totient is φ = 5299200.

The previous prime is 22050979. The next prime is 22051009. The reversal of 22050990 is 9905022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54790 + ... + 55190.

It is an arithmetic number, because the mean of its divisors is an integer number (658476).

Almost surely, 2^22050990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22050990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31606848).

22050990 is an abundant number, since it is smaller than the sum of its proper divisors (41162706).

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

22050990 is a wasteful number, since it uses less digits than its factorization.

22050990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 22050990 is about 4695.8481661996. The cubic root of 22050990 is about 280.4202448002.

The spelling of 22050990 in words is "twenty-two million, fifty thousand, nine hundred ninety".