20109592 has 8 divisors (see below), whose sum is σ = 37705500. Its totient is φ = 10054792.

The previous prime is 20109577. The next prime is 20109601. The reversal of 20109592 is 29590102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20109592.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256842 + ... + 1256857.

Almost surely, 2^20109592 is an apocalyptic number.

It is an amenable number.

20109592 is a deficient number, since it is larger than the sum of its proper divisors (17595908).

20109592 is a wasteful number, since it uses less digits than its factorization.

20109592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513705 (or 2513701 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 20109592 is about 4484.3719738666. The cubic root of 20109592 is about 271.9366562415.

Adding to 20109592 its reverse (29590102), we get a palindrome (49699694).

The spelling of 20109592 in words is "twenty million, one hundred nine thousand, five hundred ninety-two".