20835164 has 12 divisors (see below), whose sum is σ = 41670384. Its totient is φ = 8929344.

The previous prime is 20835161. The next prime is 20835187. The reversal of 20835164 is 46153802.

20835164 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20835161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372029 + ... + 372084.

It is an arithmetic number, because the mean of its divisors is an integer number (3472532).

Almost surely, 2^20835164 is an apocalyptic number.

It is an amenable number.

20835164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20835164 is a wasteful number, since it uses less digits than its factorization.

20835164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744124 (or 744122 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 20835164 is about 4564.5551809568. Note that the first 3 decimals coincide. The cubic root of 20835164 is about 275.1686634760.

Adding to 20835164 its reverse (46153802), we get a palindrome (66988966).

The spelling of 20835164 in words is "twenty million, eight hundred thirty-five thousand, one hundred sixty-four".