162241220 has 12 divisors (see below), whose sum is σ = 340706604. Its totient is φ = 64896480.

The previous prime is 162241181. The next prime is 162241229. The reversal of 162241220 is 22142261.

It is a happy number.

162241220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 104693824 + 57547396 = 10232^2 + 7586^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 8112061 = 162241220 / (1 + 6 + 2 + 2 + 4 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 162241192 and 162241201.

It is not an unprimeable number, because it can be changed into a prime (162241229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4056011 + ... + 4056050.

It is an arithmetic number, because the mean of its divisors is an integer number (28392217).

Almost surely, 2^162241220 is an apocalyptic number.

162241220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162241220 is an abundant number, since it is smaller than the sum of its proper divisors (178465384).

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

162241220 is a wasteful number, since it uses less digits than its factorization.

162241220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8112070 (or 8112068 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 162241220 is about 12737.3945530473. The cubic root of 162241220 is about 545.4066151655.

Adding to 162241220 its reverse (22142261), we get a palindrome (184383481).

The spelling of 162241220 in words is "one hundred sixty-two million, two hundred forty-one thousand, two hundred twenty".