20115366 has 12 divisors (see below), whose sum is σ = 40252716. Its totient is φ = 6701460.

The previous prime is 20115353. The next prime is 20115367. The reversal of 20115366 is 66351102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20115367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10071 + ... + 11901.

It is an arithmetic number, because the mean of its divisors is an integer number (3354393).

Almost surely, 2^20115366 is an apocalyptic number.

20115366 is an abundant number, since it is smaller than the sum of its proper divisors (20137350).

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

20115366 is an frugal number, since it uses more digits than its factorization.

20115366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20115366 is about 4485.0157190360. The cubic root of 20115366 is about 271.9626805056.

Multiplying 20115366 by its sum of digits (24), we get a square (482768784 = 21972²).

Adding to 20115366 its reverse (66351102), we get a palindrome (86466468).

The spelling of 20115366 in words is "twenty million, one hundred fifteen thousand, three hundred sixty-six".