20975110 has 32 divisors (see below), whose sum is σ = 43055712. Its totient is φ = 7288320.

The previous prime is 20975089. The next prime is 20975117. The reversal of 20975110 is 1157902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20975117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2536 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (1345491).

Almost surely, 2^20975110 is an apocalyptic number.

20975110 is an abundant number, since it is smaller than the sum of its proper divisors (22080602).

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

20975110 is a wasteful number, since it uses less digits than its factorization.

20975110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 20975110 is about 4579.8591681404. The cubic root of 20975110 is about 275.7833751451.

The spelling of 20975110 in words is "twenty million, nine hundred seventy-five thousand, one hundred ten".