164136728 has 32 divisors (see below), whose sum is σ = 352162560. Its totient is φ = 70256160.

The previous prime is 164136727. The next prime is 164136743. The reversal of 164136728 is 827631461.

It is a junction number, because it is equal to n+sod(n) for n = 164136691 and 164136700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164136727) by changing a digit.

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, 64325 + ... + 66827.

It is an arithmetic number, because the mean of its divisors is an integer number (11005080).

Almost surely, 2^164136728 is an apocalyptic number.

It is an amenable number.

164136728 is an abundant number, since it is smaller than the sum of its proper divisors (188025832).

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

164136728 is a wasteful number, since it uses less digits than its factorization.

164136728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687 (or 3683 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 164136728 is about 12811.5856942066. The cubic root of 164136728 is about 547.5224407863.

The spelling of 164136728 in words is "one hundred sixty-four million, one hundred thirty-six thousand, seven hundred twenty-eight".