22851845 has 8 divisors (see below), whose sum is σ = 27497976. Its totient is φ = 18230976.

The previous prime is 22851839. The next prime is 22851853. The reversal of 22851845 is 54815822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2502724 + 20349121 = 1582^2 + 4511^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22851845 - 2⁸ = 22851589 is a prime.

It is a Duffinian number.

It is a congruent 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, 4262 + ... + 7991.

It is an arithmetic number, because the mean of its divisors is an integer number (3437247).

Almost surely, 2^22851845 is an apocalyptic number.

It is an amenable number.

22851845 is a deficient number, since it is larger than the sum of its proper divisors (4646131).

22851845 is a wasteful number, since it uses less digits than its factorization.

22851845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12631.

The product of its digits is 25600, while the sum is 35.

The square root of 22851845 is about 4780.3603420663. The cubic root of 22851845 is about 283.7747544499.

The spelling of 22851845 in words is "twenty-two million, eight hundred fifty-one thousand, eight hundred forty-five".