20641710 has 32 divisors (see below), whose sum is σ = 49986720. Its totient is φ = 5454848.

The previous prime is 20641679. The next prime is 20641717. The reversal of 20641710 is 1714602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20641717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346 + ... + 6434.

It is an arithmetic number, because the mean of its divisors is an integer number (1562085).

Almost surely, 2^20641710 is an apocalyptic number.

20641710 is an abundant number, since it is smaller than the sum of its proper divisors (29345010).

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

20641710 is a wasteful number, since it uses less digits than its factorization.

20641710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6212.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20641710 is about 4543.3148691236. The cubic root of 20641710 is about 274.3143691386.

The spelling of 20641710 in words is "twenty million, six hundred forty-one thousand, seven hundred ten".