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13199473 = 72269377
BaseRepresentation
bin110010010110…
…100001110001
3220211121021101
4302112201301
511334340343
61150524401
7220123300
oct62264161
926747241
1013199473
1174a5a61
124506701
132971c51
141a78437
15125ae4d
hexc96871

13199473 has 6 divisors (see below), whose sum is σ = 15354546. Its totient is φ = 11313792.

The previous prime is 13199467. The next prime is 13199477. The reversal of 13199473 is 37499131.

It can be written as a sum of positive squares in only one way, i.e., 13198689 + 784 = 3633^2 + 28^2 .

It is not a de Polignac number, because 13199473 - 217 = 13068401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13199477) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 134640 + ... + 134737.

It is an arithmetic number, because the mean of its divisors is an integer number (2559091).

Almost surely, 213199473 is an apocalyptic number.

It is an amenable number.

13199473 is a deficient number, since it is larger than the sum of its proper divisors (2155073).

13199473 is an equidigital number, since it uses as much as digits as its factorization.

13199473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269391 (or 269384 counting only the distinct ones).

The product of its digits is 20412, while the sum is 37.

The square root of 13199473 is about 3633.1078982051. The cubic root of 13199473 is about 236.3300049110.

The spelling of 13199473 in words is "thirteen million, one hundred ninety-nine thousand, four hundred seventy-three".

Divisors: 1 7 49 269377 1885639 13199473