164581200 has 360 divisors, whose sum is σ = 683616960. Its totient is φ = 37497600.

The previous prime is 164581147. The next prime is 164581213. The reversal of 164581200 is 2185461.

164581200 is a `hidden beast` number, since 1 + 6 + 458 + 1 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 529045 + ... + 529355.

It is an arithmetic number, because the mean of its divisors is an integer number (1898936).

Almost surely, 2^164581200 is an apocalyptic number.

164581200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164581200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341808480).

164581200 is an abundant number, since it is smaller than the sum of its proper divisors (519035760).

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

164581200 is a wasteful number, since it uses less digits than its factorization.

164581200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 164581200 is about 12828.9204534131. The cubic root of 164581200 is about 548.0162142005.

The spelling of 164581200 in words is "one hundred sixty-four million, five hundred eighty-one thousand, two hundred".