20050120 has 32 divisors (see below), whose sum is σ = 45256320. Its totient is φ = 7994560.

The previous prime is 20050117. The next prime is 20050127. The reversal of 20050120 is 2105002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20050097 and 20050106.

It is not an unprimeable number, because it can be changed into a prime (20050127) 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, 16659 + ... + 17821.

It is an arithmetic number, because the mean of its divisors is an integer number (1414260).

Almost surely, 2^20050120 is an apocalyptic number.

20050120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20050120 is an abundant number, since it is smaller than the sum of its proper divisors (25206200).

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

20050120 is a wasteful number, since it uses less digits than its factorization.

20050120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605 (or 1601 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 20050120 is about 4477.7360350963. The cubic root of 20050120 is about 271.6683168672.

Adding to 20050120 its reverse (2105002), we get a palindrome (22155122).

The spelling of 20050120 in words is "twenty million, fifty thousand, one hundred twenty".