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8669668 = 22737189
BaseRepresentation
bin100001000100…
…100111100100
3121022110112211
4201010213210
54204412133
6505453204
7133456000
oct41044744
917273484
108669668
114991717
122aa1204
131a471a7
141219700
15b63bcd
hex8449e4

8669668 has 48 divisors (see below), whose sum is σ = 18144000. Its totient is φ = 3622080.

The previous prime is 8669657. The next prime is 8669669.

8669668 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (8669669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97368 + ... + 97456.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 28669668 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 8669668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9072000).

8669668 is an abundant number, since it is smaller than the sum of its proper divisors (9474332).

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

8669668 is a wasteful number, since it uses less digits than its factorization.

8669668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 169 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The square root of 8669668 is about 2944.4299957717. The cubic root of 8669668 is about 205.4317136457.

The spelling of 8669668 in words is "eight million, six hundred sixty-nine thousand, six hundred sixty-eight".

Divisors: 1 2 4 7 14 28 49 71 89 98 142 178 196 284 343 356 497 623 686 994 1246 1372 1988 2492 3479 4361 6319 6958 8722 12638 13916 17444 24353 25276 30527 44233 48706 61054 88466 97412 122108 176932 309631 619262 1238524 2167417 4334834 8669668