20886550 has 12 divisors (see below), whose sum is σ = 38849076. Its totient is φ = 8354600.

The previous prime is 20886539. The next prime is 20886559. The reversal of 20886550 is 5568802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20886559) 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 5 ways as a sum of consecutive naturals, for example, 208816 + ... + 208915.

It is an arithmetic number, because the mean of its divisors is an integer number (3237423).

Almost surely, 2^20886550 is an apocalyptic number.

20886550 is a deficient number, since it is larger than the sum of its proper divisors (17962526).

20886550 is a wasteful number, since it uses less digits than its factorization.

20886550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417743 (or 417738 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 20886550 is about 4570.1805215987. The cubic root of 20886550 is about 275.3946949493.

The spelling of 20886550 in words is "twenty million, eight hundred eighty-six thousand, five hundred fifty".