164261250 has 160 divisors (see below), whose sum is σ = 473848320. Its totient is φ = 42120000.

The previous prime is 164261243. The next prime is 164261261. The reversal of 164261250 is 52162461.

164261250 is a `hidden beast` number, since 1 + 6 + 42 + 612 + 5 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 1046172 + ... + 1046328.

It is an arithmetic number, because the mean of its divisors is an integer number (2961552).

Almost surely, 2^164261250 is an apocalyptic number.

164261250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 164261250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236924160).

164261250 is an abundant number, since it is smaller than the sum of its proper divisors (309587070).

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

164261250 is a wasteful number, since it uses less digits than its factorization.

164261250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 164261250 is about 12816.4445147631. Note that the first 3 decimals coincide. The cubic root of 164261250 is about 547.6608647216.

The spelling of 164261250 in words is "one hundred sixty-four million, two hundred sixty-one thousand, two hundred fifty".