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7568028 = 223213103157
BaseRepresentation
bin11100110111101010011100
3112020111101100
4130313222130
53414134103
6430113100
7121220136
oct34675234
915214340
107568028
1142a9a76
12264b790
13174c930
141010056
159e75a3
hex737a9c

7568028 has 72 divisors (see below), whose sum is σ = 20934368. Its totient is φ = 2291328.

The previous prime is 7568021. The next prime is 7568039. The reversal of 7568028 is 8208657.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7567983 and 7568001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7568021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48126 + ... + 48282.

Almost surely, 27568028 is an apocalyptic number.

7568028 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7568028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10467184).

7568028 is an abundant number, since it is smaller than the sum of its proper divisors (13366340).

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

7568028 is a wasteful number, since it uses less digits than its factorization.

7568028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 7568028 is about 2751.0049073021. The cubic root of 7568028 is about 196.3334252530. Note that the first 3 decimals are identical.

The spelling of 7568028 in words is "seven million, five hundred sixty-eight thousand, twenty-eight".

Divisors: 1 2 3 4 6 9 12 13 18 26 36 39 52 78 103 117 156 157 206 234 309 314 412 468 471 618 628 927 942 1236 1339 1413 1854 1884 2041 2678 2826 3708 4017 4082 5356 5652 6123 8034 8164 12051 12246 16068 16171 18369 24102 24492 32342 36738 48204 48513 64684 73476 97026 145539 194052 210223 291078 420446 582156 630669 840892 1261338 1892007 2522676 3784014 7568028