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13470345 = 3257241149
BaseRepresentation
bin110011011000…
…101010001001
3221100100211200
4303120222021
511422022340
61200414413
7222332100
oct63305211
927310750
1013470345
117670519
124617409
132a38325
141b09037
1512b1330
hexcd8a89

13470345 has 72 divisors (see below), whose sum is σ = 28009800. Its totient is φ = 5967360.

The previous prime is 13470323. The next prime is 13470361. The reversal of 13470345 is 54307431.

It can be written as a sum of positive squares in 4 ways, for example, as 423801 + 13046544 = 651^2 + 3612^2 .

It is not a de Polignac number, because 13470345 - 211 = 13468297 is a prime.

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 71 ways as a sum of consecutive naturals, for example, 90331 + ... + 90479.

It is an arithmetic number, because the mean of its divisors is an integer number (389025).

Almost surely, 213470345 is an apocalyptic number.

13470345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13470345 is an abundant number, since it is smaller than the sum of its proper divisors (14539455).

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

13470345 is a wasteful number, since it uses less digits than its factorization.

13470345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 13470345 is about 3670.1968612051. The cubic root of 13470345 is about 237.9356804277.

Adding to 13470345 its reverse (54307431), we get a palindrome (67777776).

The spelling of 13470345 in words is "thirteen million, four hundred seventy thousand, three hundred forty-five".

Divisors: 1 3 5 7 9 15 21 35 41 45 49 63 105 123 147 149 205 245 287 315 369 441 447 615 735 745 861 1043 1341 1435 1845 2009 2205 2235 2583 3129 4305 5215 6027 6109 6705 7301 9387 10045 12915 15645 18081 18327 21903 30135 30545 36505 42763 46935 54981 65709 90405 91635 109515 128289 213815 274905 299341 328545 384867 641445 898023 1496705 1924335 2694069 4490115 13470345