164216020 has 12 divisors (see below), whose sum is σ = 344853684. Its totient is φ = 65686400.

The previous prime is 164215991. The next prime is 164216071. The reversal of 164216020 is 20612461.

It can be written as a sum of positive squares in 2 ways, for example, as 60746436 + 103469584 = 7794^2 + 10172^2 .

It is a junction number, because it is equal to n+sod(n) for n = 164215982 and 164216000.

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, 4105381 + ... + 4105420.

It is an arithmetic number, because the mean of its divisors is an integer number (28737807).

Almost surely, 2^164216020 is an apocalyptic number.

164216020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164216020 is an abundant number, since it is smaller than the sum of its proper divisors (180637664).

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

164216020 is a wasteful number, since it uses less digits than its factorization.

164216020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210810 (or 8210808 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 164216020 is about 12814.6798633442. The cubic root of 164216020 is about 547.6105932286.

Adding to 164216020 its reverse (20612461), we get a palindrome (184828481).

The spelling of 164216020 in words is "one hundred sixty-four million, two hundred sixteen thousand, twenty".