24770729 has 2 divisors, whose sum is σ = 24770730. Its totient is φ = 24770728.

The previous prime is 24770719. The next prime is 24770731. The reversal of 24770729 is 92707742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24730729 + 40000 = 4973^2 + 200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24770729 is a prime.

It is a super-2 number, since 2×24770729² = 1227178030382882, which contains 22 as substring.

Together with 24770731, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 24770692 and 24770701.

It is not a weakly prime, because it can be changed into another prime (24770719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12385364 + 12385365.

It is an arithmetic number, because the mean of its divisors is an integer number (12385365).

Almost surely, 2^24770729 is an apocalyptic number.

It is an amenable number.

24770729 is a deficient number, since it is larger than the sum of its proper divisors (1).

24770729 is an equidigital number, since it uses as much as digits as its factorization.

24770729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 24770729 is about 4977.0200923846. The cubic root of 24770729 is about 291.5051707140.

The spelling of 24770729 in words is "twenty-four million, seven hundred seventy thousand, seven hundred twenty-nine".