20027982 has 32 divisors (see below), whose sum is σ = 43309728. Its totient is φ = 6137856.

The previous prime is 20027971. The next prime is 20027993. The reversal of 20027982 is 28972002.

It is an interprime number because it is at equal distance from previous prime (20027971) and next prime (20027993).

It is a super-2 number, since 2×20027982² = 802240125984648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33478 + ... + 34070.

It is an arithmetic number, because the mean of its divisors is an integer number (1353429).

Almost surely, 2^20027982 is an apocalyptic number.

20027982 is an abundant number, since it is smaller than the sum of its proper divisors (23281746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20027982 is a wasteful number, since it uses less digits than its factorization.

20027982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20027982 is about 4475.2633442067. The cubic root of 20027982 is about 271.5682940569.

Adding to 20027982 its reverse (28972002), we get a palindrome (48999984).

It can be divided in two parts, 200 and 27982, that added together give a palindrome (28182).

The spelling of 20027982 in words is "twenty million, twenty-seven thousand, nine hundred eighty-two".