20012763 has 8 divisors (see below), whose sum is σ = 27544576. Its totient is φ = 12911400.

The previous prime is 20012761. The next prime is 20012767. The reversal of 20012763 is 36721002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20012763 - 2¹ = 20012761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012761) 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, 107503 + ... + 107688.

It is an arithmetic number, because the mean of its divisors is an integer number (3443072).

Almost surely, 2^20012763 is an apocalyptic number.

20012763 is a deficient number, since it is larger than the sum of its proper divisors (7531813).

20012763 is a wasteful number, since it uses less digits than its factorization.

20012763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215225.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20012763 is about 4473.5626742005. The cubic root of 20012763 is about 271.4994895683.

Adding to 20012763 its reverse (36721002), we get a palindrome (56733765).

The spelling of 20012763 in words is "twenty million, twelve thousand, seven hundred sixty-three".