20933086 has 8 divisors (see below), whose sum is σ = 33246720. Its totient is φ = 9850848.

The previous prime is 20933071. The next prime is 20933093. The reversal of 20933086 is 68033902.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307806 + ... + 307873.

It is an arithmetic number, because the mean of its divisors is an integer number (4155840).

Almost surely, 2^20933086 is an apocalyptic number.

20933086 is a deficient number, since it is larger than the sum of its proper divisors (12313634).

20933086 is a wasteful number, since it uses less digits than its factorization.

20933086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615698.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20933086 is about 4575.2689538430. The cubic root of 20933086 is about 275.5990730665.

Adding to 20933086 its reverse (68033902), we get a palindrome (88966988).

The spelling of 20933086 in words is "twenty million, nine hundred thirty-three thousand, eighty-six".