20884230 has 160 divisors (see below), whose sum is σ = 62726400. Its totient is φ = 4961088.

The previous prime is 20884229. The next prime is 20884247. The reversal of 20884230 is 3248802.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20884194 and 20884203.

It is a congruent number.

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 79 ways as a sum of consecutive naturals, for example, 353941 + ... + 353999.

It is an arithmetic number, because the mean of its divisors is an integer number (392040).

Almost surely, 2^20884230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20884230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31363200).

20884230 is an abundant number, since it is smaller than the sum of its proper divisors (41842170).

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

20884230 is a wasteful number, since it uses less digits than its factorization.

20884230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 20884230 is about 4569.9266952545. The cubic root of 20884230 is about 275.3844979669.

The spelling of 20884230 in words is "twenty million, eight hundred eighty-four thousand, two hundred thirty".