20238366 has 16 divisors (see below), whose sum is σ = 40688784. Its totient is φ = 6710784.

The previous prime is 20238353. The next prime is 20238373. The reversal of 20238366 is 66383202.

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 7 ways as a sum of consecutive naturals, for example, 7581 + ... + 9896.

It is an arithmetic number, because the mean of its divisors is an integer number (2543049).

Almost surely, 2^20238366 is an apocalyptic number.

20238366 is an abundant number, since it is smaller than the sum of its proper divisors (20450418).

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

20238366 is a wasteful number, since it uses less digits than its factorization.

20238366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17675.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 20238366 is about 4498.7071476147. The cubic root of 20238366 is about 272.5158804538.

The spelling of 20238366 in words is "twenty million, two hundred thirty-eight thousand, three hundred sixty-six".