20475882 has 64 divisors (see below), whose sum is σ = 54758400. Its totient is φ = 5540400.

The previous prime is 20475881. The next prime is 20475893. The reversal of 20475882 is 28857402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20475881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5757 + ... + 8607.

It is an arithmetic number, because the mean of its divisors is an integer number (855600).

Almost surely, 2^20475882 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20475882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27379200).

20475882 is an abundant number, since it is smaller than the sum of its proper divisors (34282518).

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

20475882 is a wasteful number, since it uses less digits than its factorization.

20475882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888 (or 2882 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 20475882 is about 4525.0283977009. The cubic root of 20475882 is about 273.5778125283.

The spelling of 20475882 in words is "twenty million, four hundred seventy-five thousand, eight hundred eighty-two".