20304766 has 16 divisors (see below), whose sum is σ = 32421600. Its totient is φ = 9504000.

The previous prime is 20304763. The next prime is 20304769. The reversal of 20304766 is 66740302.

It is an interprime number because it is at equal distance from previous prime (20304763) and next prime (20304769).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20304763) 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, 5266 + ... + 8266.

It is an arithmetic number, because the mean of its divisors is an integer number (2026350).

Almost surely, 2^20304766 is an apocalyptic number.

20304766 is a deficient number, since it is larger than the sum of its proper divisors (12116834).

20304766 is a wasteful number, since it uses less digits than its factorization.

20304766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 20304766 is about 4506.0810023789. The cubic root of 20304766 is about 272.8135873127.

The spelling of 20304766 in words is "twenty million, three hundred four thousand, seven hundred sixty-six".