20089398 has 32 divisors (see below), whose sum is σ = 46900224. Its totient is φ = 5617152.

The previous prime is 20089397. The next prime is 20089417. The reversal of 20089398 is 89398002.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20089397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3115 + ... + 7062.

It is an arithmetic number, because the mean of its divisors is an integer number (1465632).

Almost surely, 2^20089398 is an apocalyptic number.

20089398 is an abundant number, since it is smaller than the sum of its proper divisors (26810826).

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

20089398 is a wasteful number, since it uses less digits than its factorization.

20089398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10236.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 20089398 is about 4482.1198109823. The cubic root of 20089398 is about 271.8455997274.

It can be divided in two parts, 200 and 89398, that added together give a palindrome (89598).

The spelling of 20089398 in words is "twenty million, eighty-nine thousand, three hundred ninety-eight".