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8168028 = 2231161879
BaseRepresentation
bin11111001010001001011100
3120100222102120
4133022021130
54042334103
6451022540
7126266331
oct37121134
916328376
108168028
114679840
12289aa50
1318cca6b
141128988
15ab5253
hex7ca25c

8168028 has 24 divisors (see below), whose sum is σ = 20791680. Its totient is φ = 2475120.

The previous prime is 8168023. The next prime is 8168063. The reversal of 8168028 is 8208618.

8168028 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 8168028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8168023) 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, 30808 + ... + 31071.

It is an arithmetic number, because the mean of its divisors is an integer number (866320).

Almost surely, 28168028 is an apocalyptic number.

It is an amenable number.

8168028 is an abundant number, since it is smaller than the sum of its proper divisors (12623652).

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

8168028 is a wasteful number, since it uses less digits than its factorization.

8168028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61897 (or 61895 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 8168028 is about 2857.9762070388. The cubic root of 8168028 is about 201.3905428794.

The spelling of 8168028 in words is "eight million, one hundred sixty-eight thousand, twenty-eight".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 61879 123758 185637 247516 371274 680669 742548 1361338 2042007 2722676 4084014 8168028