22873981 has 6 divisors (see below), whose sum is σ = 24769050. Its totient is φ = 21114288.

The previous prime is 22873957. The next prime is 22873987. The reversal of 22873981 is 18937822.

It can be written as a sum of positive squares in 3 ways, for example, as 396900 + 22477081 = 630^2 + 4741^2 .

It is not a de Polignac number, because 22873981 - 2⁹ = 22873469 is a prime.

It is a super-2 number, since 2×22873981² = 1046438013576722, 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 (22873987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67506 + ... + 67843.

It is an arithmetic number, because the mean of its divisors is an integer number (4128175).

Almost surely, 2^22873981 is an apocalyptic number.

It is an amenable number.

22873981 is a deficient number, since it is larger than the sum of its proper divisors (1895069).

22873981 is a wasteful number, since it uses less digits than its factorization.

22873981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135375 (or 135362 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 22873981 is about 4782.6750882743. The cubic root of 22873981 is about 283.8663533378.

The spelling of 22873981 in words is "twenty-two million, eight hundred seventy-three thousand, nine hundred eighty-one".