20460213 has 6 divisors (see below), whose sum is σ = 29553654. Its totient is φ = 13640136.

The previous prime is 20460199. The next prime is 20460239. The reversal of 20460213 is 31206402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12659364 + 7800849 = 3558^2 + 2793^2 .

It is not a de Polignac number, because 20460213 - 2¹⁰ = 20459189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20460263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1136670 + ... + 1136687.

It is an arithmetic number, because the mean of its divisors is an integer number (4925609).

Almost surely, 2^20460213 is an apocalyptic number.

It is an amenable number.

20460213 is a deficient number, since it is larger than the sum of its proper divisors (9093441).

20460213 is a wasteful number, since it uses less digits than its factorization.

20460213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273363 (or 2273360 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20460213 is about 4523.2966959951. The cubic root of 20460213 is about 273.5080103310.

Adding to 20460213 its reverse (31206402), we get a palindrome (51666615).

The spelling of 20460213 in words is "twenty million, four hundred sixty thousand, two hundred thirteen".