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13200408 = 2334131567
BaseRepresentation
bin110010010110…
…110000011000
3220211122120000
4302112300120
511334403113
61150533000
7220126104
oct62266030
926748500
1013200408
1174a6731
124507160
1329724c0
141a78904
15125b373
hexc96c18

13200408 has 80 divisors (see below), whose sum is σ = 39842880. Its totient is φ = 4059072.

The previous prime is 13200359. The next prime is 13200409. The reversal of 13200408 is 80400231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13200409) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7641 + ... + 9207.

It is an arithmetic number, because the mean of its divisors is an integer number (498036).

Almost surely, 213200408 is an apocalyptic number.

13200408 is a gapful number since it is divisible by the number (18) 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 13200408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19921440).

13200408 is an abundant number, since it is smaller than the sum of its proper divisors (26642472).

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

13200408 is a wasteful number, since it uses less digits than its factorization.

13200408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 13200408 is about 3633.2365736351. The cubic root of 13200408 is about 236.3355850160.

Adding to 13200408 its reverse (80400231), we get a palindrome (93600639).

The spelling of 13200408 in words is "thirteen million, two hundred thousand, four hundred eight".

Divisors: 1 2 3 4 6 8 9 12 13 18 24 26 27 36 39 52 54 72 78 81 104 108 117 156 162 216 234 312 324 351 468 648 702 936 1053 1404 1567 2106 2808 3134 4212 4701 6268 8424 9402 12536 14103 18804 20371 28206 37608 40742 42309 56412 61113 81484 84618 112824 122226 126927 162968 169236 183339 244452 253854 338472 366678 488904 507708 550017 733356 1015416 1100034 1466712 1650051 2200068 3300102 4400136 6600204 13200408