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26968980 = 22351941577
BaseRepresentation
bin110011011100…
…0001110010100
31212202011111010
41212320032110
523401001410
62402012220
7445142523
oct146701624
955664433
1026968980
1114250215
129047070
13578349c
1438204ba
15257ac20
hex19b8394

26968980 has 96 divisors (see below), whose sum is σ = 81567360. Its totient is φ = 6635520.

The previous prime is 26968979. The next prime is 26968993. The reversal of 26968980 is 8986962.

It is a zygodrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46452 + ... + 47028.

It is an arithmetic number, because the mean of its divisors is an integer number (849660).

Almost surely, 226968980 is an apocalyptic number.

26968980 is a gapful number since it is divisible by the number (20) 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 26968980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40783680).

26968980 is an abundant number, since it is smaller than the sum of its proper divisors (54598380).

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

26968980 is a wasteful number, since it uses less digits than its factorization.

26968980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 26968980 is about 5193.1666639922. The cubic root of 26968980 is about 299.8850670848.

The spelling of 26968980 in words is "twenty-six million, nine hundred sixty-eight thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 41 57 60 76 82 95 114 123 164 190 205 228 246 285 380 410 492 570 577 615 779 820 1140 1154 1230 1558 1731 2308 2337 2460 2885 3116 3462 3895 4674 5770 6924 7790 8655 9348 10963 11540 11685 15580 17310 21926 23370 23657 32889 34620 43852 46740 47314 54815 65778 70971 94628 109630 118285 131556 141942 164445 219260 236570 283884 328890 354855 449483 473140 657780 709710 898966 1348449 1419420 1797932 2247415 2696898 4494830 5393796 6742245 8989660 13484490 26968980