20326286 has 4 divisors (see below), whose sum is σ = 30489432. Its totient is φ = 10163142.

The previous prime is 20326277. The next prime is 20326291. The reversal of 20326286 is 68262302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68262302 = 2 ⋅34131151.

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 as a sum of consecutive naturals, namely, 5081570 + ... + 5081573.

It is an arithmetic number, because the mean of its divisors is an integer number (7622358).

Almost surely, 2^20326286 is an apocalyptic number.

20326286 is a deficient number, since it is larger than the sum of its proper divisors (10163146).

20326286 is a wasteful number, since it uses less digits than its factorization.

20326286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10163145.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 20326286 is about 4508.4682542966. The cubic root of 20326286 is about 272.9099337487.

Adding to 20326286 its reverse (68262302), we get a palindrome (88588588).

The spelling of 20326286 in words is "twenty million, three hundred twenty-six thousand, two hundred eighty-six".