20066760 has 96 divisors (see below), whose sum is σ = 74543040. Its totient is φ = 4586112.

The previous prime is 20066731. The next prime is 20066771. The reversal of 20066760 is 6766002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1462 + ... + 6501.

It is an arithmetic number, because the mean of its divisors is an integer number (776490).

Almost surely, 2^20066760 is an apocalyptic number.

20066760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20066760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37271520).

20066760 is an abundant number, since it is smaller than the sum of its proper divisors (54476280).

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

20066760 is a wasteful number, since it uses less digits than its factorization.

20066760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7987 (or 7980 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20066760 is about 4479.5937315788. The cubic root of 20066760 is about 271.7434504292.

The spelling of 20066760 in words is "twenty million, sixty-six thousand, seven hundred sixty".