20213030 has 16 divisors (see below), whose sum is σ = 36532944. Its totient is φ = 8052000.

The previous prime is 20212991. The next prime is 20213047. The reversal of 20213030 is 3031202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517 + ... + 6536.

It is an arithmetic number, because the mean of its divisors is an integer number (2283309).

Almost surely, 2^20213030 is an apocalyptic number.

20213030 is a deficient number, since it is larger than the sum of its proper divisors (16319914).

20213030 is a wasteful number, since it uses less digits than its factorization.

20213030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20213030 is about 4495.8903456379. The cubic root of 20213030 is about 272.4021139317.

Adding to 20213030 its reverse (3031202), we get a palindrome (23244232).

The spelling of 20213030 in words is "twenty million, two hundred thirteen thousand, thirty".