20210164 has 12 divisors (see below), whose sum is σ = 38088484. Its totient is φ = 9327744.

The previous prime is 20210159. The next prime is 20210189. The reversal of 20210164 is 46101202.

It can be written as a sum of positive squares in 2 ways, for example, as 5062500 + 15147664 = 2250^2 + 3892^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194277 + ... + 194380.

Almost surely, 2^20210164 is an apocalyptic number.

It is an amenable number.

20210164 is a deficient number, since it is larger than the sum of its proper divisors (17878320).

20210164 is a wasteful number, since it uses less digits than its factorization.

20210164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388674 (or 388672 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20210164 is about 4495.5715988070. The cubic root of 20210164 is about 272.3892387160.

Adding to 20210164 its reverse (46101202), we get a palindrome (66311366).

The spelling of 20210164 in words is "twenty million, two hundred ten thousand, one hundred sixty-four".