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13226408 = 2313177481
BaseRepresentation
bin110010011101…
…000110101000
3220212222012222
4302131012220
511341221113
61151253212
7220264646
oct62350650
926788188
1013226408
117514218
12451a208
1329812a0
141a84196
151263e08
hexc9d1a8

13226408 has 32 divisors (see below), whose sum is σ = 28281960. Its totient is φ = 5744640.

The previous prime is 13226401. The next prime is 13226419. The reversal of 13226408 is 80462231.

It can be written as a sum of positive squares in 4 ways, for example, as 12517444 + 708964 = 3538^2 + 842^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (13226401) 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 7 ways as a sum of consecutive naturals, for example, 1973 + ... + 5508.

Almost surely, 213226408 is an apocalyptic number.

It is an amenable number.

13226408 is an abundant number, since it is smaller than the sum of its proper divisors (15055552).

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

13226408 is a wasteful number, since it uses less digits than its factorization.

13226408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517 (or 7513 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 13226408 is about 3636.8128904303. The cubic root of 13226408 is about 236.4906482870.

Adding to 13226408 its reverse (80462231), we get a palindrome (93688639).

The spelling of 13226408 in words is "thirteen million, two hundred twenty-six thousand, four hundred eight".

Divisors: 1 2 4 8 13 17 26 34 52 68 104 136 221 442 884 1768 7481 14962 29924 59848 97253 127177 194506 254354 389012 508708 778024 1017416 1653301 3306602 6613204 13226408