162221760 has 336 divisors, whose sum is σ = 608624640. Its totient is φ = 39536640.

The previous prime is 162221749. The next prime is 162221767. The reversal of 162221760 is 67122261.

It is not an unprimeable number, because it can be changed into a prime (162221767) 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 47 ways as a sum of consecutive naturals, for example, 2053401 + ... + 2053479.

Almost surely, 2^162221760 is an apocalyptic number.

162221760 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 162221760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304312320).

162221760 is an abundant number, since it is smaller than the sum of its proper divisors (446402880).

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

162221760 is a wasteful number, since it uses less digits than its factorization.

162221760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 162221760 is about 12736.6306376530. The cubic root of 162221760 is about 545.3848080540.

The spelling of 162221760 in words is "one hundred sixty-two million, two hundred twenty-one thousand, seven hundred sixty".