20120164 has 12 divisors (see below), whose sum is σ = 37063600. Its totient is φ = 9530568.

The previous prime is 20120161. The next prime is 20120189. The reversal of 20120164 is 46102102.

It is not an unprimeable number, because it can be changed into a prime (20120161) 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, 132294 + ... + 132445.

Almost surely, 2^20120164 is an apocalyptic number.

It is an amenable number.

20120164 is a deficient number, since it is larger than the sum of its proper divisors (16943436).

20120164 is a wasteful number, since it uses less digits than its factorization.

20120164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264762 (or 264760 counting only the distinct ones).

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

The square root of 20120164 is about 4485.5505793604. The cubic root of 20120164 is about 271.9843020064.

Adding to 20120164 its reverse (46102102), we get a palindrome (66222266).

The spelling of 20120164 in words is "twenty million, one hundred twenty thousand, one hundred sixty-four".