22395681 has 48 divisors (see below), whose sum is σ = 42726528. Its totient is φ = 10944000.

The previous prime is 22395649. The next prime is 22395683. The reversal of 22395681 is 18659322.

It is not a de Polignac number, because 22395681 - 2⁵ = 22395649 is a prime.

It is a super-2 number, since 2×22395681² = 1003133054907522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22395683) 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 47 ways as a sum of consecutive naturals, for example, 10831 + ... + 12731.

It is an arithmetic number, because the mean of its divisors is an integer number (890136).

Almost surely, 2^22395681 is an apocalyptic number.

22395681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22395681 is a deficient number, since it is larger than the sum of its proper divisors (20330847).

22395681 is a wasteful number, since it uses less digits than its factorization.

22395681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942 (or 1939 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 22395681 is about 4732.4075268303. The cubic root of 22395681 is about 281.8738306876.

The spelling of 22395681 in words is "twenty-two million, three hundred ninety-five thousand, six hundred eighty-one".