20246889 has 8 divisors (see below), whose sum is σ = 29072512. Its totient is φ = 12459600.

The previous prime is 20246873. The next prime is 20246909. The reversal of 20246889 is 98864202.

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

It is not a de Polignac number, because 20246889 - 2⁴ = 20246873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 519151 = 20246889 / (2 + 0 + 2 + 4 + 6 + 8 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20246189) 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, 259537 + ... + 259614.

It is an arithmetic number, because the mean of its divisors is an integer number (3634064).

Almost surely, 2^20246889 is an apocalyptic number.

It is an amenable number.

20246889 is a deficient number, since it is larger than the sum of its proper divisors (8825623).

20246889 is a wasteful number, since it uses less digits than its factorization.

20246889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519167.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 20246889 is about 4499.6543200562. The cubic root of 20246889 is about 272.5541300318.

The spelling of 20246889 in words is "twenty million, two hundred forty-six thousand, eight hundred eighty-nine".