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12958080 = 273517397
BaseRepresentation
bin110001011011…
…100110000000
3220101100010220
4301123212000
511304124310
61141423040
7215066442
oct61334600
926340126
1012958080
117350663
12440aa80
1328b9105
141a14492
15120e670
hexc5b980

12958080 has 128 divisors (see below), whose sum is σ = 43843680. Its totient is φ = 3244032.

The previous prime is 12958079. The next prime is 12958087. The reversal of 12958080 is 8085921.

12958080 = 852 + 862 + ... + 3402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12958087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32442 + ... + 32838.

Almost surely, 212958080 is an apocalyptic number.

12958080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12958080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21921840).

12958080 is an abundant number, since it is smaller than the sum of its proper divisors (30885600).

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

12958080 is a wasteful number, since it uses less digits than its factorization.

12958080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 12958080 is about 3599.7333234561. The cubic root of 12958080 is about 234.8804582894.

The spelling of 12958080 in words is "twelve million, nine hundred fifty-eight thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 32 34 40 48 51 60 64 68 80 85 96 102 120 128 136 160 170 192 204 240 255 272 320 340 384 397 408 480 510 544 640 680 794 816 960 1020 1088 1191 1360 1588 1632 1920 1985 2040 2176 2382 2720 3176 3264 3970 4080 4764 5440 5955 6352 6528 6749 7940 8160 9528 10880 11910 12704 13498 15880 16320 19056 20247 23820 25408 26996 31760 32640 33745 38112 40494 47640 50816 53992 63520 67490 76224 80988 95280 101235 107984 127040 134980 152448 161976 190560 202470 215968 254080 269960 323952 381120 404940 431936 539920 647904 762240 809880 863872 1079840 1295808 1619760 2159680 2591616 3239520 4319360 6479040 12958080