100820027 has 8 divisors (see below), whose sum is σ = 125697792. Its totient is φ = 78561000.

The previous prime is 100820021. The next prime is 100820033. The reversal of 100820027 is 720028001.

It is an interprime number because it is at equal distance from previous prime (100820021) and next prime (100820033).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100820027 - 2⁴ = 100820011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100819990 and 100820008.

It is not an unprimeable number, because it can be changed into a prime (100820021) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 654599 + ... + 654752.

It is an arithmetic number, because the mean of its divisors is an integer number (15712224).

Almost surely, 2^100820027 is an apocalyptic number.

100820027 is a deficient number, since it is larger than the sum of its proper divisors (24877765).

100820027 is a wasteful number, since it uses less digits than its factorization.

100820027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309369.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 100820027 is about 10040.9176373477. The cubic root of 100820027 is about 465.4241737859.

Adding to 100820027 its reverse (720028001), we get a palindrome (820848028).

The spelling of 100820027 in words is "one hundred million, eight hundred twenty thousand, twenty-seven".