20276028 has 48 divisors (see below), whose sum is σ = 52889760. Its totient is φ = 6717312.

The previous prime is 20276023. The next prime is 20276033. The reversal of 20276028 is 82067202.

It is an interprime number because it is at equal distance from previous prime (20276023) and next prime (20276033).

It is a super-2 number, since 2×20276028² = 822234622913568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20275992 and 20276010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20276023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20800 + ... + 21752.

It is an arithmetic number, because the mean of its divisors is an integer number (1101870).

Almost surely, 2^20276028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20276028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26444880).

20276028 is an abundant number, since it is smaller than the sum of its proper divisors (32613732).

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

20276028 is a wasteful number, since it uses less digits than its factorization.

20276028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20276028 is about 4502.8910713007. The cubic root of 20276028 is about 272.6848192101.

The spelling of 20276028 in words is "twenty million, two hundred seventy-six thousand, twenty-eight".