20808882 has 24 divisors (see below), whose sum is σ = 47047104. Its totient is φ = 6634584.

The previous prime is 20808881. The next prime is 20808883. The reversal of 20808882 is 28880802.

It is an interprime number because it is at equal distance from previous prime (20808881) and next prime (20808883).

It is not an unprimeable number, because it can be changed into a prime (20808881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24718 + ... + 25545.

It is an arithmetic number, because the mean of its divisors is an integer number (1960296).

Almost surely, 2^20808882 is an apocalyptic number.

20808882 is an abundant number, since it is smaller than the sum of its proper divisors (26238222).

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

20808882 is a wasteful number, since it uses less digits than its factorization.

20808882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50294 (or 50291 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 20808882 is about 4561.6753501318. The cubic root of 20808882 is about 275.0529132342.

It can be divided in two parts, 20808 and 882, that multiplied together give a square (18352656 = 4284²).

The spelling of 20808882 in words is "twenty million, eight hundred eight thousand, eight hundred eighty-two".