20489883 has 8 divisors (see below), whose sum is σ = 27429696. Its totient is φ = 13605000.

The previous prime is 20489881. The next prime is 20489891. The reversal of 20489883 is 38898402.

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 20489883 - 2¹ = 20489881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20489881) by changing a digit.

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, 12853 + ... + 14358.

It is an arithmetic number, because the mean of its divisors is an integer number (3428712).

Almost surely, 2^20489883 is an apocalyptic number.

20489883 is a deficient number, since it is larger than the sum of its proper divisors (6939813).

20489883 is a wasteful number, since it uses less digits than its factorization.

20489883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27465.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 20489883 is about 4526.5751954430. The cubic root of 20489883 is about 273.6401540063.

The spelling of 20489883 in words is "twenty million, four hundred eighty-nine thousand, eight hundred eighty-three".