22462981 has 2 divisors, whose sum is σ = 22462982. Its totient is φ = 22462980.

The previous prime is 22462949. The next prime is 22462987. The reversal of 22462981 is 18926422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18198756 + 4264225 = 4266^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 22462981 - 2⁵ = 22462949 is a prime.

It is a super-2 number, since 2×22462981² = 1009171030812722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22462987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11231490 + 11231491.

It is an arithmetic number, because the mean of its divisors is an integer number (11231491).

Almost surely, 2^22462981 is an apocalyptic number.

It is an amenable number.

22462981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22462981 is an equidigital number, since it uses as much as digits as its factorization.

22462981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 22462981 is about 4739.5127386684. The cubic root of 22462981 is about 282.1558960623.

The spelling of 22462981 in words is "twenty-two million, four hundred sixty-two thousand, nine hundred eighty-one".