20016164 has 24 divisors (see below), whose sum is σ = 41774208. Its totient is φ = 8205120.

The previous prime is 20016137. The next prime is 20016167. The reversal of 20016164 is 46161002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20016167) 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, 14897 + ... + 16184.

It is an arithmetic number, because the mean of its divisors is an integer number (1740592).

Almost surely, 2^20016164 is an apocalyptic number.

It is an amenable number.

20016164 is an abundant number, since it is smaller than the sum of its proper divisors (21758044).

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

20016164 is a wasteful number, since it uses less digits than its factorization.

20016164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31115 (or 31113 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20016164 is about 4473.9427801437. The cubic root of 20016164 is about 271.5148683787.

Adding to 20016164 its reverse (46161002), we get a palindrome (66177166).

The spelling of 20016164 in words is "twenty million, sixteen thousand, one hundred sixty-four".