20213366 has 8 divisors (see below), whose sum is σ = 31638384. Its totient is φ = 9667240.

The previous prime is 20213353. The next prime is 20213399. The reversal of 20213366 is 66331202.

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

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219665 + ... + 219756.

It is an arithmetic number, because the mean of its divisors is an integer number (3954798).

Almost surely, 2^20213366 is an apocalyptic number.

20213366 is a deficient number, since it is larger than the sum of its proper divisors (11425018).

20213366 is a wasteful number, since it uses less digits than its factorization.

20213366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439446.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20213366 is about 4495.9277129420. The cubic root of 20213366 is about 272.4036232980.

Adding to 20213366 its reverse (66331202), we get a palindrome (86544568).

The spelling of 20213366 in words is "twenty million, two hundred thirteen thousand, three hundred sixty-six".