162820120 has 32 divisors (see below), whose sum is σ = 385628400. Its totient is φ = 61699968.

The previous prime is 162820109. The next prime is 162820121. The reversal of 162820120 is 21028261.

It is a junction number, because it is equal to n+sod(n) for n = 162820091 and 162820100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162820121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106359 + ... + 107878.

Almost surely, 2^162820120 is an apocalyptic number.

162820120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162820120 is an abundant number, since it is smaller than the sum of its proper divisors (222808280).

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

162820120 is a wasteful number, since it uses less digits than its factorization.

162820120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214267 (or 214263 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 162820120 is about 12760.0987456994. The cubic root of 162820120 is about 546.0545415511.

Adding to 162820120 its reverse (21028261), we get a palindrome (183848381).

The spelling of 162820120 in words is "one hundred sixty-two million, eight hundred twenty thousand, one hundred twenty".