20666202 has 32 divisors (see below), whose sum is σ = 42842112. Its totient is φ = 6640704.

The previous prime is 20666201. The next prime is 20666209. The reversal of 20666202 is 20266602.

It is not an unprimeable number, because it can be changed into a prime (20666201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27828 + ... + 28560.

It is an arithmetic number, because the mean of its divisors is an integer number (1338816).

Almost surely, 2^20666202 is an apocalyptic number.

20666202 is an abundant number, since it is smaller than the sum of its proper divisors (22175910).

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

20666202 is a wasteful number, since it uses less digits than its factorization.

20666202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20666202 is about 4546.0094588551. The cubic root of 20666202 is about 274.4228202964.

The spelling of 20666202 in words is "twenty million, six hundred sixty-six thousand, two hundred two".