32224981 has 4 divisors (see below), whose sum is σ = 32236812. Its totient is φ = 32213152.

The previous prime is 32224967. The next prime is 32224987. The reversal of 32224981 is 18942223.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1322500 + 30902481 = 1150^2 + 5559^2 .

It is a cyclic number.

It is not a de Polignac number, because 32224981 - 2⁵ = 32224949 is a prime.

It is a super-2 number, since 2×32224981² = 2076898800900722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32224987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465 + ... + 8041.

It is an arithmetic number, because the mean of its divisors is an integer number (8059203).

Almost surely, 2^32224981 is an apocalyptic number.

It is an amenable number.

32224981 is a deficient number, since it is larger than the sum of its proper divisors (11831).

32224981 is an equidigital number, since it uses as much as digits as its factorization.

32224981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11830.

The product of its digits is 6912, while the sum is 31.

The square root of 32224981 is about 5676.7051182882. The cubic root of 32224981 is about 318.2225049047. Note that the first 3 decimals are identical.

The spelling of 32224981 in words is "thirty-two million, two hundred twenty-four thousand, nine hundred eighty-one".