20027966 has 12 divisors (see below), whose sum is σ = 34946928. Its totient is φ = 8583372.

The previous prime is 20027941. The next prime is 20027971. The reversal of 20027966 is 66972002.

It is a super-2 number, since 2×20027966² = 802238844194312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 102086 + ... + 102281.

It is an arithmetic number, because the mean of its divisors is an integer number (2912244).

Almost surely, 2^20027966 is an apocalyptic number.

20027966 is a deficient number, since it is larger than the sum of its proper divisors (14918962).

20027966 is a wasteful number, since it uses less digits than its factorization.

20027966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204383 (or 204376 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20027966 is about 4475.2615566020. The cubic root of 20027966 is about 271.5682217399.

Adding to 20027966 its reverse (66972002), we get a palindrome (86999968).

The spelling of 20027966 in words is "twenty million, twenty-seven thousand, nine hundred sixty-six".