8120028 has 24 divisors (see below), whose sum is σ = 21653632. Its totient is φ = 2319984.

The previous prime is 8120027. The next prime is 8120039. The reversal of 8120028 is 8200218.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 8119986 and 8120013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48250 + ... + 48417.

Almost surely, 2^8120028 is an apocalyptic number.

It is an amenable number.

8120028 is an abundant number, since it is smaller than the sum of its proper divisors (13533604).

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

8120028 is a wasteful number, since it uses less digits than its factorization.

8120028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96681 (or 96679 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 8120028 is about 2849.5662827876. The cubic root of 8120028 is about 200.9952722830.

The spelling of 8120028 in words is "eight million, one hundred twenty thousand, twenty-eight".