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13000004 = 2229112069
BaseRepresentation
bin110001100101…
…110101000100
3220110110122122
4301211311010
511312000004
61142345112
7215332613
oct61456504
926413578
1013000004
11737a106
12442b198
132902214
141a2587a
15121bcbe
hexc65d44

13000004 has 12 divisors (see below), whose sum is σ = 23534700. Its totient is φ = 6275808.

The previous prime is 12999997. The next prime is 13000027. The reversal of 13000004 is 40000031.

13000004 = T212 + T213 + ... + T443.

It can be written as a sum of positive squares in 2 ways, for example, as 6240004 + 6760000 = 2498^2 + 2600^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12999955 and 13000000.

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 3 ways as a sum of consecutive naturals, for example, 55919 + ... + 56150.

It is an arithmetic number, because the mean of its divisors is an integer number (1961225).

Almost surely, 213000004 is an apocalyptic number.

It is an amenable number.

13000004 is a deficient number, since it is larger than the sum of its proper divisors (10534696).

13000004 is a wasteful number, since it uses less digits than its factorization.

13000004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112102 (or 112100 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 13000004 is about 3605.5518301641. The cubic root of 13000004 is about 235.1334928883.

Adding to 13000004 its reverse (40000031), we get a palindrome (53000035).

The spelling of 13000004 in words is "thirteen million, four", and thus it is an aban number.

Divisors: 1 2 4 29 58 116 112069 224138 448276 3250001 6500002 13000004