20162120 has 32 divisors (see below), whose sum is σ = 49489920. Its totient is φ = 7331520.

The previous prime is 20162113. The next prime is 20162123. The reversal of 20162120 is 2126102.

It is a super-2 number, since 2×20162120² = 813022165788800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20162095 and 20162104.

It is not an unprimeable number, because it can be changed into a prime (20162123) 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, 22472 + ... + 23351.

It is an arithmetic number, because the mean of its divisors is an integer number (1546560).

Almost surely, 2^20162120 is an apocalyptic number.

20162120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20162120 is an abundant number, since it is smaller than the sum of its proper divisors (29327800).

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

20162120 is a wasteful number, since it uses less digits than its factorization.

20162120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45845 (or 45841 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20162120 is about 4490.2249386863. The cubic root of 20162120 is about 272.1732244329.

Adding to 20162120 its reverse (2126102), we get a palindrome (22288222).

The spelling of 20162120 in words is "twenty million, one hundred sixty-two thousand, one hundred twenty".