21960922 has 8 divisors (see below), whose sum is σ = 34675200. Its totient is φ = 10402524.

The previous prime is 21960893. The next prime is 21960931. The reversal of 21960922 is 22906912.

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

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, 288922 + ... + 288997.

It is an arithmetic number, because the mean of its divisors is an integer number (4334400).

Almost surely, 2^21960922 is an apocalyptic number.

21960922 is a deficient number, since it is larger than the sum of its proper divisors (12714278).

21960922 is a wasteful number, since it uses less digits than its factorization.

21960922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577940.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 21960922 is about 4686.2481795142. The cubic root of 21960922 is about 280.0379285355.

The spelling of 21960922 in words is "twenty-one million, nine hundred sixty thousand, nine hundred twenty-two".