20287326 has 32 divisors (see below), whose sum is σ = 42940800. Its totient is φ = 6372000.

The previous prime is 20287313. The next prime is 20287343. The reversal of 20287326 is 62378202.

It is a junction number, because it is equal to n+sod(n) for n = 20287293 and 20287302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28260 + ... + 28968.

It is an arithmetic number, because the mean of its divisors is an integer number (1341900).

Almost surely, 2^20287326 is an apocalyptic number.

20287326 is an abundant number, since it is smaller than the sum of its proper divisors (22653474).

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

20287326 is a wasteful number, since it uses less digits than its factorization.

20287326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20287326 is about 4504.1454239400. The cubic root of 20287326 is about 272.7354573503.

The spelling of 20287326 in words is "twenty million, two hundred eighty-seven thousand, three hundred twenty-six".