20975124 has 24 divisors (see below), whose sum is σ = 49026208. Its totient is φ = 6979680.

The previous prime is 20975117. The next prime is 20975131. The reversal of 20975124 is 42157902.

It is an interprime number because it is at equal distance from previous prime (20975117) and next prime (20975131).

It is a junction number, because it is equal to n+sod(n) for n = 20975091 and 20975100.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8334 + ... + 10554.

Almost surely, 2^20975124 is an apocalyptic number.

It is an amenable number.

20975124 is an abundant number, since it is smaller than the sum of its proper divisors (28051084).

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

20975124 is a wasteful number, since it uses less digits than its factorization.

20975124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3015 (or 3013 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 20975124 is about 4579.8606965715. The cubic root of 20975124 is about 275.7834365030.

The spelling of 20975124 in words is "twenty million, nine hundred seventy-five thousand, one hundred twenty-four".