20216049 has 8 divisors (see below), whose sum is σ = 30805440. Its totient is φ = 11552016.

The previous prime is 20216047. The next prime is 20216069. The reversal of 20216049 is 94061202.

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

It is not a de Polignac number, because 20216049 - 2¹ = 20216047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20216047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481314 + ... + 481355.

It is an arithmetic number, because the mean of its divisors is an integer number (3850680).

Almost surely, 2^20216049 is an apocalyptic number.

It is an amenable number.

20216049 is a deficient number, since it is larger than the sum of its proper divisors (10589391).

20216049 is an equidigital number, since it uses as much as digits as its factorization.

20216049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962679.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20216049 is about 4496.2260841733. The cubic root of 20216049 is about 272.4156751682.

The spelling of 20216049 in words is "twenty million, two hundred sixteen thousand, forty-nine".