20884055 has 16 divisors (see below), whose sum is σ = 25536000. Its totient is φ = 16394400.

The previous prime is 20884051. The next prime is 20884079. The reversal of 20884055 is 55048802.

It is not a de Polignac number, because 20884055 - 2² = 20884051 is a prime.

It is a super-2 number, since 2×20884055² = 872287506486050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20884051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104846 + ... + 105044.

It is an arithmetic number, because the mean of its divisors is an integer number (1596000).

Almost surely, 2^20884055 is an apocalyptic number.

20884055 is a deficient number, since it is larger than the sum of its proper divisors (4651945).

20884055 is a wasteful number, since it uses less digits than its factorization.

20884055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494.

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 20884055 is about 4569.9075482990. The cubic root of 20884055 is about 275.3837287673.

The spelling of 20884055 in words is "twenty million, eight hundred eighty-four thousand, fifty-five".