20115086 has 4 divisors (see below), whose sum is σ = 30172632. Its totient is φ = 10057542.

The previous prime is 20115083. The next prime is 20115101. The reversal of 20115086 is 68051102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20115083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028770 + ... + 5028773.

It is an arithmetic number, because the mean of its divisors is an integer number (7543158).

Almost surely, 2^20115086 is an apocalyptic number.

20115086 is a deficient number, since it is larger than the sum of its proper divisors (10057546).

20115086 is a wasteful number, since it uses less digits than its factorization.

20115086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10057545.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 20115086 is about 4484.9845038751. The cubic root of 20115086 is about 271.9614186194.

Adding to 20115086 its reverse (68051102), we get a palindrome (88166188).

The spelling of 20115086 in words is "twenty million, one hundred fifteen thousand, eighty-six".