20764812 has 24 divisors (see below), whose sum is σ = 50122800. Its totient is φ = 6682816.

The previous prime is 20764811. The next prime is 20764813. The reversal of 20764812 is 21846702.

It is an interprime number because it is at equal distance from previous prime (20764811) and next prime (20764813).

It is a self number, because there is not a number n which added to its sum of digits gives 20764812.

It is not an unprimeable number, because it can be changed into a prime (20764811) 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, 29487 + ... + 30182.

It is an arithmetic number, because the mean of its divisors is an integer number (2088450).

Almost surely, 2^20764812 is an apocalyptic number.

It is an amenable number.

20764812 is an abundant number, since it is smaller than the sum of its proper divisors (29357988).

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

20764812 is a wasteful number, since it uses less digits than its factorization.

20764812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59705 (or 59703 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20764812 is about 4556.8423277528. The cubic root of 20764812 is about 274.8586027921.

The spelling of 20764812 in words is "twenty million, seven hundred sixty-four thousand, eight hundred twelve".