Search a number
-
+
26981160 = 2335317253
BaseRepresentation
bin110011011101…
…1001100101000
31212202210012020
41212323030220
523401344120
62402144440
7445223163
oct146731450
955683166
1026981160
1114259388
129052120
135788bab
143824ada
15257e640
hex19bb328

26981160 has 64 divisors (see below), whose sum is σ = 83566080. Its totient is φ = 6961920.

The previous prime is 26981147. The next prime is 26981161. The reversal of 26981160 is 6118962.

It is not an unprimeable number, because it can be changed into a prime (26981161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94 + ... + 7346.

It is an arithmetic number, because the mean of its divisors is an integer number (1305720).

Almost surely, 226981160 is an apocalyptic number.

26981160 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 26981160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41783040).

26981160 is an abundant number, since it is smaller than the sum of its proper divisors (56584920).

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

26981160 is a wasteful number, since it uses less digits than its factorization.

26981160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7298 (or 7294 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 26981160 is about 5194.3392265042. The cubic root of 26981160 is about 299.9302059861.

The spelling of 26981160 in words is "twenty-six million, nine hundred eighty-one thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 31 40 60 62 93 120 124 155 186 248 310 372 465 620 744 930 1240 1860 3720 7253 14506 21759 29012 36265 43518 58024 72530 87036 108795 145060 174072 217590 224843 290120 435180 449686 674529 870360 899372 1124215 1349058 1798744 2248430 2698116 3372645 4496860 5396232 6745290 8993720 13490580 26981160