22727985 has 32 divisors (see below), whose sum is σ = 41783040. Its totient is φ = 10334208.

The previous prime is 22727983. The next prime is 22727993. The reversal of 22727985 is 58972722.

It is a happy number.

It is not a de Polignac number, because 22727985 - 2¹ = 22727983 is a prime.

It is a super-2 number, since 2×22727985² = 1033122604320450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22727983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24001 + ... + 24929.

It is an arithmetic number, because the mean of its divisors is an integer number (1305720).

Almost surely, 2^22727985 is an apocalyptic number.

It is an amenable number.

22727985 is a deficient number, since it is larger than the sum of its proper divisors (19055055).

22727985 is a wasteful number, since it uses less digits than its factorization.

22727985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177.

The product of its digits is 141120, while the sum is 42.

The square root of 22727985 is about 4767.3876494365. The cubic root of 22727985 is about 283.2611265441.

The spelling of 22727985 in words is "twenty-two million, seven hundred twenty-seven thousand, nine hundred eighty-five".