20884068 has 60 divisors (see below), whose sum is σ = 55902000. Its totient is φ = 6794928.

The previous prime is 20884051. The next prime is 20884079. The reversal of 20884068 is 86048802.

It is a super-2 number, since 2×20884068² = 872288592457248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 13183 + ... + 14681.

It is an arithmetic number, because the mean of its divisors is an integer number (931700).

Almost surely, 2^20884068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20884068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27951000).

20884068 is an abundant number, since it is smaller than the sum of its proper divisors (35017932).

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

20884068 is a wasteful number, since it uses less digits than its factorization.

20884068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 20884068 is about 4569.9089706470. The cubic root of 20884068 is about 275.3837859080.

The spelling of 20884068 in words is "twenty million, eight hundred eighty-four thousand, sixty-eight".