164070820 has 24 divisors (see below), whose sum is σ = 346618944. Its totient is φ = 65234016.

The previous prime is 164070793. The next prime is 164070827. The reversal of 164070820 is 28070461.

It is not an unprimeable number, because it can be changed into a prime (164070827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21222 + ... + 27901.

It is an arithmetic number, because the mean of its divisors is an integer number (14442456).

Almost surely, 2^164070820 is an apocalyptic number.

164070820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164070820 is an abundant number, since it is smaller than the sum of its proper divisors (182548124).

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

164070820 is a wasteful number, since it uses less digits than its factorization.

164070820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49299 (or 49297 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 164070820 is about 12809.0132328763. The cubic root of 164070820 is about 547.4491463230.

The spelling of 164070820 in words is "one hundred sixty-four million, seventy thousand, eight hundred twenty".