20115027 has 8 divisors (see below), whose sum is σ = 29800080. Its totient is φ = 13410000.

The previous prime is 20115023. The next prime is 20115031. The reversal of 20115027 is 72051102.

It is an interprime number because it is at equal distance from previous prime (20115023) and next prime (20115031).

It is not a de Polignac number, because 20115027 - 2² = 20115023 is a prime.

It is a super-2 number, since 2×20115027² = 809228622421458, which contains 22 as substring.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372474 + ... + 372527.

It is an arithmetic number, because the mean of its divisors is an integer number (3725010).

Almost surely, 2^20115027 is an apocalyptic number.

20115027 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20115027 is a deficient number, since it is larger than the sum of its proper divisors (9685053).

20115027 is an equidigital number, since it uses as much as digits as its factorization.

20115027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745010 (or 745004 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 20115027 is about 4484.9779263671. The cubic root of 20115027 is about 271.9611527205.

Adding to 20115027 its reverse (72051102), we get a palindrome (92166129).

The spelling of 20115027 in words is "twenty million, one hundred fifteen thousand, twenty-seven".