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13204008 = 2332183389
BaseRepresentation
bin110010010111…
…101000101000
3220211211111100
4302113220220
511340012013
61151001400
7220142436
oct62275050
926754440
1013204008
1174a9404
124509260
13297402c
141a79d56
15125c473
hexc97a28

13204008 has 24 divisors (see below), whose sum is σ = 35761050. Its totient is φ = 4401312.

The previous prime is 13204007. The next prime is 13204043. The reversal of 13204008 is 80040231.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12659364 + 544644 = 3558^2 + 738^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is not an unprimeable number, because it can be changed into a prime (13204007) 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, 91623 + ... + 91766.

Almost surely, 213204008 is an apocalyptic number.

13204008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13204008 is an abundant number, since it is smaller than the sum of its proper divisors (22557042).

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

13204008 is a wasteful number, since it uses less digits than its factorization.

13204008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183401 (or 183394 counting only the distinct ones).

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

The square root of 13204008 is about 3633.7319658995. The cubic root of 13204008 is about 236.3570674524.

Adding to 13204008 its reverse (80040231), we get a palindrome (93244239).

The spelling of 13204008 in words is "thirteen million, two hundred four thousand, eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 183389 366778 550167 733556 1100334 1467112 1650501 2200668 3301002 4401336 6602004 13204008