24020981 has 2 divisors, whose sum is σ = 24020982. Its totient is φ = 24020980.

The previous prime is 24020963. The next prime is 24020987. The reversal of 24020981 is 18902042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 5958481 = 4250^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 24020981 - 2⁶ = 24020917 is a prime.

It is a super-2 number, since 2×24020981² = 1154015056404722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 24020981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24020987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12010490 + 12010491.

It is an arithmetic number, because the mean of its divisors is an integer number (12010491).

Almost surely, 2^24020981 is an apocalyptic number.

It is an amenable number.

24020981 is a deficient number, since it is larger than the sum of its proper divisors (1).

24020981 is an equidigital number, since it uses as much as digits as its factorization.

24020981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 24020981 is about 4901.1203821167. The cubic root of 24020981 is about 288.5339446857.

The spelling of 24020981 in words is "twenty-four million, twenty thousand, nine hundred eighty-one".