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8684028 = 2232463521
BaseRepresentation
bin100001001000…
…000111111100
3121100012020200
4201020013330
54210342103
6510043500
7133545603
oct41100774
917305220
108684028
1149a1491
122aa9590
131a508a2
141220a3a
15b680a3
hex8481fc

8684028 has 36 divisors (see below), whose sum is σ = 22040928. Its totient is φ = 2882880.

The previous prime is 8684023. The next prime is 8684029. The reversal of 8684028 is 8204868.

8684028 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

8684028 is a nontrivial binomial coefficient, being equal to C(4168, 2).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8683983 and 8684001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8684023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16408 + ... + 16928.

It is an arithmetic number, because the mean of its divisors is an integer number (612248).

Almost surely, 28684028 is an apocalyptic number.

8684028 is the 4167-th triangular number and also the 2084-th hexagonal number.

It is an amenable number.

8684028 is an abundant number, since it is smaller than the sum of its proper divisors (13356900).

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

8684028 is a wasteful number, since it uses less digits than its factorization.

8684028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 8684028 is about 2946.8674893860. The cubic root of 8684028 is about 205.5450733177.

It can be divided in two parts, 86840 and 28, that added together give a palindrome (86868).

The spelling of 8684028 in words is "eight million, six hundred eighty-four thousand, twenty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 463 521 926 1042 1389 1563 1852 2084 2778 3126 4167 4689 5556 6252 8334 9378 16668 18756 241223 482446 723669 964892 1447338 2171007 2894676 4342014 8684028