20028282 has 32 divisors (see below), whose sum is σ = 41342400. Its totient is φ = 6464640.

The previous prime is 20028277. The next prime is 20028287. The reversal of 20028282 is 28282002.

It is an interprime number because it is at equal distance from previous prime (20028277) and next prime (20028287).

It is a super-2 number, since 2×20028282² = 802264159743048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20028287) 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, 38182 + ... + 38702.

It is an arithmetic number, because the mean of its divisors is an integer number (1291950).

Almost surely, 2^20028282 is an apocalyptic number.

20028282 is an abundant number, since it is smaller than the sum of its proper divisors (21314118).

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

20028282 is a wasteful number, since it uses less digits than its factorization.

20028282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 20028282 is about 4475.2968616618. The cubic root of 20028282 is about 271.5696499945.

It can be divided in two parts, 200 and 28282, that added together give a palindrome (28482).

The spelling of 20028282 in words is "twenty million, twenty-eight thousand, two hundred eighty-two".