20489358 has 8 divisors (see below), whose sum is σ = 40978728. Its totient is φ = 6829784.

The previous prime is 20489327. The next prime is 20489363. The reversal of 20489358 is 85398402.

It is a happy number.

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

20489358 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1707441 + ... + 1707452.

It is an arithmetic number, because the mean of its divisors is an integer number (5122341).

Almost surely, 2^20489358 is an apocalyptic number.

20489358 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20489358 is a wasteful number, since it uses less digits than its factorization.

20489358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414898.

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

The square root of 20489358 is about 4526.5172042090. The cubic root of 20489358 is about 273.6378168804.

The spelling of 20489358 in words is "twenty million, four hundred eighty-nine thousand, three hundred fifty-eight".