20185350 has 48 divisors (see below), whose sum is σ = 51426768. Its totient is φ = 5235840.

The previous prime is 20185339. The next prime is 20185357. The reversal of 20185350 is 5358102.

It is a self number, because there is not a number n which added to its sum of digits gives 20185350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20185357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3732 + ... + 7368.

It is an arithmetic number, because the mean of its divisors is an integer number (1071391).

Almost surely, 2^20185350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20185350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25713384).

20185350 is an abundant number, since it is smaller than the sum of its proper divisors (31241418).

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

20185350 is a wasteful number, since it uses less digits than its factorization.

20185350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689 (or 3684 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 20185350 is about 4492.8109241320. The cubic root of 20185350 is about 272.2777134011.

The spelling of 20185350 in words is "twenty million, one hundred eighty-five thousand, three hundred fifty".