20551882 has 16 divisors (see below), whose sum is σ = 34947360. Its totient is φ = 8986032.

The previous prime is 20551877. The next prime is 20551889. The reversal of 20551882 is 28815502.

It is not an unprimeable number, because it can be changed into a prime (20551889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20308 + ... + 21295.

It is an arithmetic number, because the mean of its divisors is an integer number (2184210).

Almost surely, 2^20551882 is an apocalyptic number.

20551882 is a deficient number, since it is larger than the sum of its proper divisors (14395478).

20551882 is a wasteful number, since it uses less digits than its factorization.

20551882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41637.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 20551882 is about 4533.4183570458. The cubic root of 20551882 is about 273.9158727289.

The spelling of 20551882 in words is "twenty million, five hundred fifty-one thousand, eight hundred eighty-two".