20384958 has 32 divisors (see below), whose sum is σ = 45096192. Its totient is φ = 6091200.

The previous prime is 20384957. The next prime is 20384977. The reversal of 20384958 is 85948302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20384953) 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, 2703 + ... + 6933.

It is an arithmetic number, because the mean of its divisors is an integer number (1409256).

Almost surely, 2^20384958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20384958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22548096).

20384958 is an abundant number, since it is smaller than the sum of its proper divisors (24711234).

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

20384958 is a wasteful number, since it uses less digits than its factorization.

20384958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 20384958 is about 4514.9704317969. The cubic root of 20384958 is about 273.1722671277.

It can be divided in two parts, 2038 and 4958, that added together give a palindrome (6996).

The spelling of 20384958 in words is "twenty million, three hundred eighty-four thousand, nine hundred fifty-eight".