20354164 has 6 divisors (see below), whose sum is σ = 35619794. Its totient is φ = 10177080.

The previous prime is 20354161. The next prime is 20354203. The reversal of 20354164 is 46145302.

It can be written as a sum of positive squares in only one way, i.e., 13749264 + 6604900 = 3708^2 + 2570^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2544267 + ... + 2544274.

Almost surely, 2^20354164 is an apocalyptic number.

It is an amenable number.

20354164 is a deficient number, since it is larger than the sum of its proper divisors (15265630).

20354164 is a wasteful number, since it uses less digits than its factorization.

20354164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088545 (or 5088543 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20354164 is about 4511.5589323426. The cubic root of 20354164 is about 273.0346443084.

Adding to 20354164 its reverse (46145302), we get a palindrome (66499466).

The spelling of 20354164 in words is "twenty million, three hundred fifty-four thousand, one hundred sixty-four".