22432981 has 8 divisors (see below), whose sum is σ = 23531904. Its totient is φ = 21344400.

The previous prime is 22432967. The next prime is 22432987. The reversal of 22432981 is 18923422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22432981 - 2¹³ = 22424789 is a prime.

It is a super-2 number, since 2×22432981² = 1006477273092722, 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 (22432987) 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 7 ways as a sum of consecutive naturals, for example, 2056 + ... + 7006.

It is an arithmetic number, because the mean of its divisors is an integer number (2941488).

Almost surely, 2^22432981 is an apocalyptic number.

It is an amenable number.

22432981 is a deficient number, since it is larger than the sum of its proper divisors (1098923).

22432981 is a wasteful number, since it uses less digits than its factorization.

22432981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171.

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

The square root of 22432981 is about 4736.3467989580. The cubic root of 22432981 is about 282.0302308184.

The spelling of 22432981 in words is "twenty-two million, four hundred thirty-two thousand, nine hundred eighty-one".