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13390208 = 27132619
BaseRepresentation
bin110011000101…
…000110000000
3221012021220122
4303011012000
511411441313
61154555412
7221546336
oct63050600
927167818
1013390208
117616297
124598b68
132a0aa00
141ac7b56
151297708
hexcc5180

13390208 has 48 divisors (see below), whose sum is σ = 28932300. Its totient is φ = 6170112.

The previous prime is 13390207. The next prime is 13390211. The reversal of 13390208 is 80209331.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13390207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21323 + ... + 21941.

Almost surely, 213390208 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 13390208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14466150).

13390208 is an abundant number, since it is smaller than the sum of its proper divisors (15542092).

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

13390208 is an equidigital number, since it uses as much as digits as its factorization.

13390208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 13390208 is about 3659.2633138379. The cubic root of 13390208 is about 237.4629039014.

Adding to 13390208 its reverse (80209331), we get a palindrome (93599539).

The spelling of 13390208 in words is "thirteen million, three hundred ninety thousand, two hundred eight".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 128 169 208 338 416 619 676 832 1238 1352 1664 2476 2704 4952 5408 8047 9904 10816 16094 19808 21632 32188 39616 64376 79232 104611 128752 209222 257504 418444 515008 836888 1030016 1673776 3347552 6695104 13390208