20115026 has 4 divisors (see below), whose sum is σ = 30172542. Its totient is φ = 10057512.

The previous prime is 20115023. The next prime is 20115031. The reversal of 20115026 is 62051102.

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

It can be written as a sum of positive squares in only one way, i.e., 20025625 + 89401 = 4475^2 + 299^2 .

It is a super-2 number, since 2×20115026² = 809228541961352, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20114995 and 20115013.

It is not an unprimeable number, because it can be changed into a prime (20115023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028755 + ... + 5028758.

Almost surely, 2^20115026 is an apocalyptic number.

20115026 is a deficient number, since it is larger than the sum of its proper divisors (10057516).

20115026 is a wasteful number, since it uses less digits than its factorization.

20115026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10057515.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20115026 is about 4484.9778148838. The cubic root of 20115026 is about 271.9611482137.

Adding to 20115026 its reverse (62051102), we get a palindrome (82166128).

The spelling of 20115026 in words is "twenty million, one hundred fifteen thousand, twenty-six".