20768650 has 60 divisors (see below), whose sum is σ = 45325782. Its totient is φ = 7079520.

The previous prime is 20768617. The next prime is 20768711. The reversal of 20768650 is 5686702.

It can be written as a sum of positive squares in 3 ways, for example, as 19018321 + 1750329 = 4361^2 + 1323^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 119964 + ... + 120136.

Almost surely, 2^20768650 is an apocalyptic number.

20768650 is an abundant number, since it is smaller than the sum of its proper divisors (24557132).

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

20768650 is an equidigital number, since it uses as much as digits as its factorization.

20768650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 20768650 is about 4557.2634332459. The cubic root of 20768650 is about 274.8755359630.

The spelling of 20768650 in words is "twenty million, seven hundred sixty-eight thousand, six hundred fifty".