20945299 has 8 divisors (see below), whose sum is σ = 21283920. Its totient is φ = 20608896.

The previous prime is 20945291. The next prime is 20945303. The reversal of 20945299 is 99254902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20945299 - 2³ = 20945291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20945291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33639 + ... + 34255.

It is an arithmetic number, because the mean of its divisors is an integer number (2660490).

Almost surely, 2^20945299 is an apocalyptic number.

20945299 is a deficient number, since it is larger than the sum of its proper divisors (338621).

20945299 is an equidigital number, since it uses as much as digits as its factorization.

20945299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 20945299 is about 4576.6034348630. The cubic root of 20945299 is about 275.6526602777.

The spelling of 20945299 in words is "twenty million, nine hundred forty-five thousand, two hundred ninety-nine".