20053766 has 4 divisors (see below), whose sum is σ = 30080652. Its totient is φ = 10026882.

The previous prime is 20053763. The next prime is 20053783. The reversal of 20053766 is 66735002.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20053763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5013440 + ... + 5013443.

It is an arithmetic number, because the mean of its divisors is an integer number (7520163).

Almost surely, 2^20053766 is an apocalyptic number.

20053766 is a deficient number, since it is larger than the sum of its proper divisors (10026886).

20053766 is a wasteful number, since it uses less digits than its factorization.

20053766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026885.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 20053766 is about 4478.1431419730. The cubic root of 20053766 is about 271.6847829806.

Adding to 20053766 its reverse (66735002), we get a palindrome (86788768).

The spelling of 20053766 in words is "twenty million, fifty-three thousand, seven hundred sixty-six".