21822294 has 24 divisors (see below), whose sum is σ = 47262312. Its totient is φ = 6714240.

The previous prime is 21822293. The next prime is 21822343. The reversal of 21822294 is 49222812.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21822293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9747 + ... + 11774.

It is an arithmetic number, because the mean of its divisors is an integer number (1969263).

Almost surely, 2^21822294 is an apocalyptic number.

21822294 is an abundant number, since it is smaller than the sum of its proper divisors (25440018).

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

21822294 is a wasteful number, since it uses less digits than its factorization.

21822294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21552 (or 21539 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 21822294 is about 4671.4338269957. The cubic root of 21822294 is about 279.4474391880.

The spelling of 21822294 in words is "twenty-one million, eight hundred twenty-two thousand, two hundred ninety-four".