20589286 has 4 divisors (see below), whose sum is σ = 30883932. Its totient is φ = 10294642.

The previous prime is 20589271. The next prime is 20589287. The reversal of 20589286 is 68298502.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20589287) 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 as a sum of consecutive naturals, namely, 5147320 + ... + 5147323.

It is an arithmetic number, because the mean of its divisors is an integer number (7720983).

Almost surely, 2^20589286 is an apocalyptic number.

20589286 is a deficient number, since it is larger than the sum of its proper divisors (10294646).

20589286 is a wasteful number, since it uses less digits than its factorization.

20589286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10294645.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 20589286 is about 4537.5418455371. The cubic root of 20589286 is about 274.0819457600.

The spelling of 20589286 in words is "twenty million, five hundred eighty-nine thousand, two hundred eighty-six".