20027810 has 32 divisors (see below), whose sum is σ = 39604032. Its totient is φ = 7231680.

The previous prime is 20027801. The next prime is 20027851. The reversal of 20027810 is 1872002.

It is a super-2 number, since 2×20027810² = 802226346792200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17372 + ... + 18488.

It is an arithmetic number, because the mean of its divisors is an integer number (1237626).

Almost surely, 2^20027810 is an apocalyptic number.

20027810 is a deficient number, since it is larger than the sum of its proper divisors (19576222).

20027810 is a wasteful number, since it uses less digits than its factorization.

20027810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298.

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

The square root of 20027810 is about 4475.2441274192. The cubic root of 20027810 is about 271.5675166466.

Adding to 20027810 its reverse (1872002), we get a palindrome (21899812).

The spelling of 20027810 in words is "twenty million, twenty-seven thousand, eight hundred ten".