20710164 has 24 divisors (see below), whose sum is σ = 48398560. Its totient is φ = 6892704.

The previous prime is 20710163. The next prime is 20710181. The reversal of 20710164 is 46101702.

It is a self number, because there is not a number n which added to its sum of digits gives 20710164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20710163) 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, 12327 + ... + 13905.

Almost surely, 2^20710164 is an apocalyptic number.

It is an amenable number.

20710164 is an abundant number, since it is smaller than the sum of its proper divisors (27688396).

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

20710164 is a wasteful number, since it uses less digits than its factorization.

20710164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679 (or 2677 counting only the distinct ones).

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

The square root of 20710164 is about 4550.8421198719. The cubic root of 20710164 is about 274.6172703401.

Adding to 20710164 its reverse (46101702), we get a palindrome (66811866).

The spelling of 20710164 in words is "twenty million, seven hundred ten thousand, one hundred sixty-four".