20943366 has 16 divisors (see below), whose sum is σ = 41945904. Its totient is φ = 6971264.

The previous prime is 20943361. The next prime is 20943379. The reversal of 20943366 is 66334902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20943361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3106 + ... + 7178.

It is an arithmetic number, because the mean of its divisors is an integer number (2621619).

Almost surely, 2^20943366 is an apocalyptic number.

20943366 is an abundant number, since it is smaller than the sum of its proper divisors (21002538).

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

20943366 is a wasteful number, since it uses less digits than its factorization.

20943366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 20943366 is about 4576.3922471746. The cubic root of 20943366 is about 275.6441802048.

It can be divided in two parts, 2094 and 3366, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 20943366 in words is "twenty million, nine hundred forty-three thousand, three hundred sixty-six".