162223640 has 48 divisors (see below), whose sum is σ = 371699280. Its totient is φ = 63707840.

The previous prime is 162223637. The next prime is 162223643. The reversal of 162223640 is 46322261.

It is an interprime number because it is at equal distance from previous prime (162223637) and next prime (162223643).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162223643) 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 11 ways as a sum of consecutive naturals, for example, 678641 + ... + 678879.

It is an arithmetic number, because the mean of its divisors is an integer number (7743735).

Almost surely, 2^162223640 is an apocalyptic number.

162223640 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 162223640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185849640).

162223640 is an abundant number, since it is smaller than the sum of its proper divisors (209475640).

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

162223640 is an equidigital number, since it uses as much as digits as its factorization.

162223640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 162223640 is about 12736.7044403174. The cubic root of 162223640 is about 545.3869148809.

The spelling of 162223640 in words is "one hundred sixty-two million, two hundred twenty-three thousand, six hundred forty".