20100027 has 16 divisors (see below), whose sum is σ = 27457920. Its totient is φ = 13075392.

The previous prime is 20100023. The next prime is 20100053. The reversal of 20100027 is 72000102.

It is not a de Polignac number, because 20100027 - 2² = 20100023 is a prime.

It is a super-2 number, since 2×20100027² = 808022170801458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20099985 and 20100021.

It is not an unprimeable number, because it can be changed into a prime (20100023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21708 + ... + 22614.

It is an arithmetic number, because the mean of its divisors is an integer number (1716120).

Almost surely, 2^20100027 is an apocalyptic number.

20100027 is a deficient number, since it is larger than the sum of its proper divisors (7357893).

20100027 is an equidigital number, since it uses as much as digits as its factorization.

20100027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 20100027 is about 4483.3053654642. The cubic root of 20100027 is about 271.8935344215.

Adding to 20100027 its reverse (72000102), we get a palindrome (92100129).

The spelling of 20100027 in words is "twenty million, one hundred thousand, twenty-seven".