20445086 has 8 divisors (see below), whose sum is σ = 30805824. Its totient is φ = 10176480.

The previous prime is 20445071. The next prime is 20445097. The reversal of 20445086 is 68054402.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22475 + ... + 23366.

It is an arithmetic number, because the mean of its divisors is an integer number (3850728).

Almost surely, 2^20445086 is an apocalyptic number.

20445086 is a deficient number, since it is larger than the sum of its proper divisors (10360738).

20445086 is a wasteful number, since it uses less digits than its factorization.

20445086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46066.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 20445086 is about 4521.6242656815. The cubic root of 20445086 is about 273.4405888152.

Adding to 20445086 its reverse (68054402), we get a palindrome (88499488).

The spelling of 20445086 in words is "twenty million, four hundred forty-five thousand, eighty-six".