20344249 has 2 divisors, whose sum is σ = 20344250. Its totient is φ = 20344248.

The previous prime is 20344211. The next prime is 20344267. The reversal of 20344249 is 94244302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20250000 + 94249 = 4500^2 + 307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20344249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20344549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172124 + 10172125.

It is an arithmetic number, because the mean of its divisors is an integer number (10172125).

Almost surely, 2^20344249 is an apocalyptic number.

It is an amenable number.

20344249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344249 is an equidigital number, since it uses as much as digits as its factorization.

20344249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 20344249 is about 4510.4599543727. The cubic root of 20344249 is about 272.9903032063.

The spelling of 20344249 in words is "twenty million, three hundred forty-four thousand, two hundred forty-nine".