20028516 has 24 divisors (see below), whose sum is σ = 49482720. Its totient is φ = 6283392.

The previous prime is 20028509. The next prime is 20028517. The reversal of 20028516 is 61582002.

It is a super-2 number, since 2×20028516² = 802282906324512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20028517) 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, 48886 + ... + 49293.

It is an arithmetic number, because the mean of its divisors is an integer number (2061780).

Almost surely, 2^20028516 is an apocalyptic number.

It is an amenable number.

20028516 is an abundant number, since it is smaller than the sum of its proper divisors (29454204).

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

20028516 is a wasteful number, since it uses less digits than its factorization.

20028516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98203 (or 98201 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20028516 is about 4475.3230051025. The cubic root of 20028516 is about 271.5707076164.

The spelling of 20028516 in words is "twenty million, twenty-eight thousand, five hundred sixteen".