24713981 has 2 divisors, whose sum is σ = 24713982. Its totient is φ = 24713980.

The previous prime is 24713977. The next prime is 24713987. The reversal of 24713981 is 18931742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23921881 + 792100 = 4891^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 24713981 - 2² = 24713977 is a prime.

It is a super-2 number, since 2×24713981² = 1221561713736722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24713987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12356990 + 12356991.

It is an arithmetic number, because the mean of its divisors is an integer number (12356991).

Almost surely, 2^24713981 is an apocalyptic number.

It is an amenable number.

24713981 is a deficient number, since it is larger than the sum of its proper divisors (1).

24713981 is an equidigital number, since it uses as much as digits as its factorization.

24713981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 24713981 is about 4971.3158217921. The cubic root of 24713981 is about 291.2823945498.

The spelling of 24713981 in words is "twenty-four million, seven hundred thirteen thousand, nine hundred eighty-one".