20213662 has 16 divisors (see below), whose sum is σ = 34836192. Its totient is φ = 8616960.

The previous prime is 20213659. The next prime is 20213681. The reversal of 20213662 is 26631202.

It is a happy number.

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, 1039 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (2177262).

Almost surely, 2^20213662 is an apocalyptic number.

20213662 is a deficient number, since it is larger than the sum of its proper divisors (14622530).

20213662 is a wasteful number, since it uses less digits than its factorization.

20213662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7683.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20213662 is about 4495.9606315002. The cubic root of 20213662 is about 272.4049529641.

Adding to 20213662 its reverse (26631202), we get a palindrome (46844864).

The spelling of 20213662 in words is "twenty million, two hundred thirteen thousand, six hundred sixty-two".