24642229 has 2 divisors, whose sum is σ = 24642230. Its totient is φ = 24642228.

The previous prime is 24642209. The next prime is 24642251. The reversal of 24642229 is 92224642.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22819729 + 1822500 = 4777^2 + 1350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24642229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24642229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24642209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12321114 + 12321115.

It is an arithmetic number, because the mean of its divisors is an integer number (12321115).

Almost surely, 2^24642229 is an apocalyptic number.

It is an amenable number.

24642229 is a deficient number, since it is larger than the sum of its proper divisors (1).

24642229 is an equidigital number, since it uses as much as digits as its factorization.

24642229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 24642229 is about 4964.0939757422. The cubic root of 24642229 is about 291.0002283076. Note that the first 3 decimals are identical.

The spelling of 24642229 in words is "twenty-four million, six hundred forty-two thousand, two hundred twenty-nine".