20766120 has 64 divisors (see below), whose sum is σ = 62821440. Its totient is φ = 5491200.

The previous prime is 20766113. The next prime is 20766121. The reversal of 20766120 is 2166702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20766121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15060 + ... + 16380.

It is an arithmetic number, because the mean of its divisors is an integer number (981585).

Almost surely, 2^20766120 is an apocalyptic number.

20766120 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 20766120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31410720).

20766120 is an abundant number, since it is smaller than the sum of its proper divisors (42055320).

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

20766120 is a wasteful number, since it uses less digits than its factorization.

20766120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466 (or 1462 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20766120 is about 4556.9858459293. The cubic root of 20766120 is about 274.8643738935.

The spelling of 20766120 in words is "twenty million, seven hundred sixty-six thousand, one hundred twenty".