22352985 has 12 divisors (see below), whose sum is σ = 38745252. Its totient is φ = 11921568.

The previous prime is 22352963. The next prime is 22352989. The reversal of 22352985 is 58925322.

It can be written as a sum of positive squares in 2 ways, for example, as 6095961 + 16257024 = 2469^2 + 4032^2 .

It is not a de Polignac number, because 22352985 - 2⁷ = 22352857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22352989) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 248322 + ... + 248411.

It is an arithmetic number, because the mean of its divisors is an integer number (3228771).

Almost surely, 2^22352985 is an apocalyptic number.

It is an amenable number.

22352985 is a deficient number, since it is larger than the sum of its proper divisors (16392267).

22352985 is a wasteful number, since it uses less digits than its factorization.

22352985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496744 (or 496741 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 22352985 is about 4727.8943516115. The cubic root of 22352985 is about 281.6945916472.

The spelling of 22352985 in words is "twenty-two million, three hundred fifty-two thousand, nine hundred eighty-five".