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12953388 = 22371747193
BaseRepresentation
bin110001011010…
…011100101100
3220101002201010
4301122130230
511304002023
61141345220
7215046660
oct61323454
926332633
1012953388
117348088
124408210
1328b6c36
141a128a0
15120d093
hexc5a72c

12953388 has 96 divisors (see below), whose sum is σ = 37545984. Its totient is φ = 3391488.

The previous prime is 12953387. The next prime is 12953389. The reversal of 12953388 is 88335921.

12953388 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12953387) and next prime (12953389).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12953387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67020 + ... + 67212.

It is an arithmetic number, because the mean of its divisors is an integer number (391104).

Almost surely, 212953388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12953388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18772992).

12953388 is an abundant number, since it is smaller than the sum of its proper divisors (24592596).

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

12953388 is a wasteful number, since it uses less digits than its factorization.

12953388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 269 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 12953388 is about 3599.0815495068. The cubic root of 12953388 is about 234.8521055254.

The spelling of 12953388 in words is "twelve million, nine hundred fifty-three thousand, three hundred eighty-eight".

Divisors: 1 2 3 4 6 7 12 14 17 21 28 34 42 47 51 68 84 94 102 119 141 188 193 204 238 282 329 357 386 476 564 579 658 714 772 799 987 1158 1316 1351 1428 1598 1974 2316 2397 2702 3196 3281 3948 4053 4794 5404 5593 6562 8106 9071 9588 9843 11186 13124 16212 16779 18142 19686 22372 22967 27213 33558 36284 39372 45934 54426 63497 67116 68901 91868 108852 126994 137802 154207 190491 253988 275604 308414 380982 462621 616828 761964 925242 1079449 1850484 2158898 3238347 4317796 6476694 12953388