22427985 has 16 divisors (see below), whose sum is σ = 36108864. Its totient is φ = 11886912.

The previous prime is 22427969. The next prime is 22427987. The reversal of 22427985 is 58972422.

22427985 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 22427985 - 2⁴ = 22427969 is a prime.

It is a super-2 number, since 2×22427985² = 1006029022320450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22427987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2142 + ... + 7031.

It is an arithmetic number, because the mean of its divisors is an integer number (2256804).

Almost surely, 2^22427985 is an apocalyptic number.

It is an amenable number.

22427985 is a deficient number, since it is larger than the sum of its proper divisors (13680879).

22427985 is a wasteful number, since it uses less digits than its factorization.

22427985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344.

The product of its digits is 80640, while the sum is 39.

The square root of 22427985 is about 4735.8193588861. The cubic root of 22427985 is about 282.0092924859.

The spelling of 22427985 in words is "twenty-two million, four hundred twenty-seven thousand, nine hundred eighty-five".