20052666 has 12 divisors (see below), whose sum is σ = 43447482. Its totient is φ = 6684216.

The previous prime is 20052653. The next prime is 20052667. The reversal of 20052666 is 66625002.

It can be written as a sum of positive squares in only one way, i.e., 14220441 + 5832225 = 3771^2 + 2415^2 .

It is not an unprimeable number, because it can be changed into a prime (20052667) 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, 557001 + ... + 557036.

Almost surely, 2^20052666 is an apocalyptic number.

20052666 is an abundant number, since it is smaller than the sum of its proper divisors (23394816).

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

20052666 is a wasteful number, since it uses less digits than its factorization.

20052666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114045 (or 1114042 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20052666 is about 4478.0203215260. The cubic root of 20052666 is about 271.6798153563.

Adding to 20052666 its reverse (66625002), we get a palindrome (86677668).

The spelling of 20052666 in words is "twenty million, fifty-two thousand, six hundred sixty-six".