164630128 has 40 divisors (see below), whose sum is σ = 344509200. Its totient is φ = 75761664.

The previous prime is 164630107. The next prime is 164630171. The reversal of 164630128 is 821036461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 164630128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86208 + ... + 88096.

It is an arithmetic number, because the mean of its divisors is an integer number (8612730).

Almost surely, 2^164630128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164630128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172254600).

164630128 is an abundant number, since it is smaller than the sum of its proper divisors (179879072).

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

164630128 is a wasteful number, since it uses less digits than its factorization.

164630128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329 (or 2323 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 164630128 is about 12830.8272531431. The cubic root of 164630128 is about 548.0705150171.

Adding to 164630128 its reverse (821036461), we get a palindrome (985666589).

The spelling of 164630128 in words is "one hundred sixty-four million, six hundred thirty thousand, one hundred twenty-eight".