20734286 has 8 divisors (see below), whose sum is σ = 31275720. Its totient is φ = 10309048.

The previous prime is 20734283. The next prime is 20734297. The reversal of 20734286 is 68243702.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20734283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28601 + ... + 29316.

It is an arithmetic number, because the mean of its divisors is an integer number (3909465).

Almost surely, 2^20734286 is an apocalyptic number.

20734286 is a deficient number, since it is larger than the sum of its proper divisors (10541434).

20734286 is a wasteful number, since it uses less digits than its factorization.

20734286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58098.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20734286 is about 4553.4916273119. The cubic root of 20734286 is about 274.7238484046.

Adding to 20734286 its reverse (68243702), we get a palindrome (88977988).

The spelling of 20734286 in words is "twenty million, seven hundred thirty-four thousand, two hundred eighty-six".