22785242 has 8 divisors (see below), whose sum is σ = 35356500. Its totient is φ = 10999744.

The previous prime is 22785241. The next prime is 22785247. The reversal of 22785242 is 24258722.

It can be written as a sum of positive squares in 2 ways, for example, as 22762441 + 22801 = 4771^2 + 151^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22785199 and 22785208.

It is not an unprimeable number, because it can be changed into a prime (22785241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196367 + ... + 196482.

Almost surely, 2^22785242 is an apocalyptic number.

22785242 is a deficient number, since it is larger than the sum of its proper divisors (12571258).

22785242 is a wasteful number, since it uses less digits than its factorization.

22785242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392880.

The product of its digits is 17920, while the sum is 32.

The square root of 22785242 is about 4773.3889428791. The cubic root of 22785242 is about 283.4987936291.

The spelling of 22785242 in words is "twenty-two million, seven hundred eighty-five thousand, two hundred forty-two".