20213016 has 16 divisors (see below), whose sum is σ = 50532600. Its totient is φ = 6737664.

The previous prime is 20212991. The next prime is 20213047. The reversal of 20213016 is 61031202.

It is a junction number, because it is equal to n+sod(n) for n = 20212986 and 20213004.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 421081 + ... + 421128.

Almost surely, 2^20213016 is an apocalyptic number.

It is an amenable number.

20213016 is an abundant number, since it is smaller than the sum of its proper divisors (30319584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20213016 is a wasteful number, since it uses less digits than its factorization.

20213016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842218 (or 842214 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20213016 is about 4495.8887886601. Note that the first 3 decimals coincide. The cubic root of 20213016 is about 272.4020510410.

Adding to 20213016 its reverse (61031202), we get a palindrome (81244218).

The spelling of 20213016 in words is "twenty million, two hundred thirteen thousand, sixteen".