20750120 has 32 divisors (see below), whose sum is σ = 46833120. Its totient is φ = 8274240.

The previous prime is 20750113. The next prime is 20750131. The reversal of 20750120 is 2105702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17135 + ... + 18305.

It is an arithmetic number, because the mean of its divisors is an integer number (1463535).

Almost surely, 2^20750120 is an apocalyptic number.

20750120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20750120 is an abundant number, since it is smaller than the sum of its proper divisors (26083000).

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

20750120 is a wasteful number, since it uses less digits than its factorization.

20750120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 20750120 is about 4555.2299612643. The cubic root of 20750120 is about 274.7937627256.

Adding to 20750120 its reverse (2105702), we get a palindrome (22855822).

The spelling of 20750120 in words is "twenty million, seven hundred fifty thousand, one hundred twenty".