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12670245 = 3257192973
BaseRepresentation
bin110000010101…
…010100100101
3212211201022100
4300111110211
511220421440
61131322313
7212460330
oct60252445
925751270
1012670245
117174385
1242b0399
1328180b3
14197b617
1511a4230
hexc15525

12670245 has 96 divisors (see below), whose sum is σ = 27705600. Its totient is φ = 5225472.

The previous prime is 12670223. The next prime is 12670247. The reversal of 12670245 is 54207621.

It is not a de Polignac number, because 12670245 - 217 = 12539173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12670247) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 173529 + ... + 173601.

It is an arithmetic number, because the mean of its divisors is an integer number (288600).

Almost surely, 212670245 is an apocalyptic number.

12670245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12670245 is an abundant number, since it is smaller than the sum of its proper divisors (15035355).

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

12670245 is a wasteful number, since it uses less digits than its factorization.

12670245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 12670245 is about 3559.5287609458. The cubic root of 12670245 is about 233.1283040211.

Adding to 12670245 its reverse (54207621), we get a palindrome (66877866).

The spelling of 12670245 in words is "twelve million, six hundred seventy thousand, two hundred forty-five".

Divisors: 1 3 5 7 9 15 19 21 29 35 45 57 63 73 87 95 105 133 145 171 203 219 261 285 315 365 399 435 511 551 609 657 665 855 1015 1095 1197 1305 1387 1533 1653 1827 1995 2117 2555 2755 3045 3285 3857 4161 4599 4959 5985 6351 6935 7665 8265 9135 9709 10585 11571 12483 14819 19053 19285 20805 22995 24795 29127 31755 34713 40223 44457 48545 57855 62415 74095 87381 95265 120669 133371 145635 173565 201115 222285 281561 362007 436905 603345 666855 844683 1407805 1810035 2534049 4223415 12670245