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13388208 = 2432367181
BaseRepresentation
bin110011000100…
…100110110000
3221012012011120
4303010212300
511411410313
61154542240
7221540451
oct63044660
927165146
1013388208
117614839
124597980
132a09b22
141ac7128
151296d23
hexcc49b0

13388208 has 80 divisors (see below), whose sum is σ = 36830976. Its totient is φ = 4181760.

The previous prime is 13388201. The next prime is 13388261. The reversal of 13388208 is 80288331.

It is a super-2 number, since 2×133882082 = 358488226902528, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13388201) 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, 73878 + ... + 74058.

Almost surely, 213388208 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 13388208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18415488).

13388208 is an abundant number, since it is smaller than the sum of its proper divisors (23442768).

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

13388208 is a wasteful number, since it uses less digits than its factorization.

13388208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 13388208 is about 3658.9900245833. The cubic root of 13388208 is about 237.4510805985.

The spelling of 13388208 in words is "thirteen million, three hundred eighty-eight thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 12 16 23 24 46 48 67 69 92 134 138 181 184 201 268 276 362 368 402 536 543 552 724 804 1072 1086 1104 1448 1541 1608 2172 2896 3082 3216 4163 4344 4623 6164 8326 8688 9246 12127 12328 12489 16652 18492 24254 24656 24978 33304 36381 36984 48508 49956 66608 72762 73968 97016 99912 145524 194032 199824 278921 291048 557842 582096 836763 1115684 1673526 2231368 3347052 4462736 6694104 13388208