22880981 has 2 divisors, whose sum is σ = 22880982. Its totient is φ = 22880980.

The previous prime is 22880951. The next prime is 22880989. The reversal of 22880981 is 18908822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19140625 + 3740356 = 4375^2 + 1934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22880981 is a prime.

It is a super-2 number, since 2×22880981² = 1047078583044722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22880989) 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 as a sum of consecutive naturals, namely, 11440490 + 11440491.

It is an arithmetic number, because the mean of its divisors is an integer number (11440491).

Almost surely, 2^22880981 is an apocalyptic number.

It is an amenable number.

22880981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22880981 is an equidigital number, since it uses as much as digits as its factorization.

22880981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 22880981 is about 4783.4068403179. The cubic root of 22880981 is about 283.8953070766.

The spelling of 22880981 in words is "twenty-two million, eight hundred eighty thousand, nine hundred eighty-one".