20489335 has 8 divisors (see below), whose sum is σ = 26033616. Its totient is φ = 15427200.

The previous prime is 20489327. The next prime is 20489363. The reversal of 20489335 is 53398402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20489335 - 2³ = 20489327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20489335.

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 7 ways as a sum of consecutive naturals, for example, 120441 + ... + 120610.

It is an arithmetic number, because the mean of its divisors is an integer number (3254202).

Almost surely, 2^20489335 is an apocalyptic number.

20489335 is a deficient number, since it is larger than the sum of its proper divisors (5544281).

20489335 is a wasteful number, since it uses less digits than its factorization.

20489335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241073.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 20489335 is about 4526.5146636237. The cubic root of 20489335 is about 273.6377144911.

The spelling of 20489335 in words is "twenty million, four hundred eighty-nine thousand, three hundred thirty-five".