162023220 has 48 divisors (see below), whose sum is σ = 504073920. Its totient is φ = 43206048.

The previous prime is 162023189. The next prime is 162023227. The reversal of 162023220 is 22320261.

162023220 is a `hidden beast` number, since 1 + 620 + 23 + 2 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 162023193 and 162023202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162023227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149482 + ... + 150561.

It is an arithmetic number, because the mean of its divisors is an integer number (10501540).

Almost surely, 2^162023220 is an apocalyptic number.

162023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162023220 is an abundant number, since it is smaller than the sum of its proper divisors (342050700).

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

162023220 is a wasteful number, since it uses less digits than its factorization.

162023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300061 (or 300053 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 162023220 is about 12728.8341964219. The cubic root of 162023220 is about 545.1622220005.

Adding to 162023220 its reverse (22320261), we get a palindrome (184343481).

The spelling of 162023220 in words is "one hundred sixty-two million, twenty-three thousand, two hundred twenty".