20300028 has 24 divisors (see below), whose sum is σ = 54133632. Its totient is φ = 5799984.

The previous prime is 20300017. The next prime is 20300039. The reversal of 20300028 is 82000302.

It is an interprime number because it is at equal distance from previous prime (20300017) and next prime (20300039).

It is a super-2 number, since 2×20300028² = 824182273601568, 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 7 ways as a sum of consecutive naturals, for example, 120750 + ... + 120917.

It is an arithmetic number, because the mean of its divisors is an integer number (2255568).

Almost surely, 2^20300028 is an apocalyptic number.

20300028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20300028 is an abundant number, since it is smaller than the sum of its proper divisors (33833604).

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

20300028 is a wasteful number, since it uses less digits than its factorization.

20300028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241681 (or 241679 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20300028 is about 4505.5552377038. Note that the first 3 decimals coincide. The cubic root of 20300028 is about 272.7923658364.

The spelling of 20300028 in words is "twenty million, three hundred thousand, twenty-eight".