22353681 has 16 divisors (see below), whose sum is σ = 34256768. Its totient is φ = 12700800.

The previous prime is 22353673. The next prime is 22353689. The reversal of 22353681 is 18635322.

It is an interprime number because it is at equal distance from previous prime (22353673) and next prime (22353689).

It is not a de Polignac number, because 22353681 - 2³ = 22353673 is a prime.

It is a super-2 number, since 2×22353681² = 999374108499522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22353689) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 861 + ... + 6741.

It is an arithmetic number, because the mean of its divisors is an integer number (2141048).

Almost surely, 2^22353681 is an apocalyptic number.

22353681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22353681 is a deficient number, since it is larger than the sum of its proper divisors (11903087).

22353681 is a wasteful number, since it uses less digits than its factorization.

22353681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072.

The product of its digits is 8640, while the sum is 30.

The square root of 22353681 is about 4727.9679567442. The cubic root of 22353681 is about 281.6975153045.

The spelling of 22353681 in words is "twenty-two million, three hundred fifty-three thousand, six hundred eighty-one".