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13407968 = 257217503
BaseRepresentation
bin110011001001…
…011011100000
3221020012021102
4303021123200
511413023333
61155213532
7221652200
oct63113340
927205242
1013407968
117628672
1245a72a8
132a15b12
141ad0400
15129cae8
hexcc96e0

13407968 has 72 divisors (see below), whose sum is σ = 32577552. Its totient is φ = 5397504.

The previous prime is 13407941. The next prime is 13407971. The reversal of 13407968 is 86970431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26405 + ... + 26907.

It is an arithmetic number, because the mean of its divisors is an integer number (452466).

Almost surely, 213407968 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 13407968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16288776).

13407968 is an abundant number, since it is smaller than the sum of its proper divisors (19169584).

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

13407968 is a wasteful number, since it uses less digits than its factorization.

13407968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13407968 is about 3661.6892276653. The cubic root of 13407968 is about 237.5678432222.

The spelling of 13407968 in words is "thirteen million, four hundred seven thousand, nine hundred sixty-eight".

Divisors: 1 2 4 7 8 14 16 17 28 32 34 49 56 68 98 112 119 136 196 224 238 272 392 476 503 544 784 833 952 1006 1568 1666 1904 2012 3332 3521 3808 4024 6664 7042 8048 8551 13328 14084 16096 17102 24647 26656 28168 34204 49294 56336 59857 68408 98588 112672 119714 136816 197176 239428 273632 394352 418999 478856 788704 837998 957712 1675996 1915424 3351992 6703984 13407968