20875050 has 144 divisors (see below), whose sum is σ = 67168320. Its totient is φ = 4669920.

The previous prime is 20875033. The next prime is 20875051. The reversal of 20875050 is 5057802.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20875051) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 444127 + ... + 444173.

Almost surely, 2^20875050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20875050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33584160).

20875050 is an abundant number, since it is smaller than the sum of its proper divisors (46293270).

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

20875050 is a wasteful number, since it uses less digits than its factorization.

20875050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 20875050 is about 4568.9221923775. The cubic root of 20875050 is about 275.3441421547.

The spelling of 20875050 in words is "twenty million, eight hundred seventy-five thousand, fifty".