22321985 has 8 divisors (see below), whose sum is σ = 30613056. Its totient is φ = 15306480.

The previous prime is 22321961. The next prime is 22321991. The reversal of 22321985 is 58912322.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-22321985 is a prime.

It is a super-3 number, since 3×22321985³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 318851 + ... + 318920.

It is an arithmetic number, because the mean of its divisors is an integer number (3826632).

Almost surely, 2^22321985 is an apocalyptic number.

It is an amenable number.

22321985 is a deficient number, since it is larger than the sum of its proper divisors (8291071).

22321985 is an equidigital number, since it uses as much as digits as its factorization.

22321985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637783.

The product of its digits is 8640, while the sum is 32.

The square root of 22321985 is about 4724.6147991133. The cubic root of 22321985 is about 281.5643096837.

The spelling of 22321985 in words is "twenty-two million, three hundred twenty-one thousand, nine hundred eighty-five".