Search a number
-
+
80871048 = 2334373373
BaseRepresentation
bin1001101000111…
…11111010001000
312122011200020000
410310133322020
5131200333143
612005203000
72001251436
oct464377210
9178150200
1080871048
1141716685
1223100460
13139a69bb
14aa51d56
157176bd3
hex4d1fe88

80871048 has 80 divisors (see below), whose sum is σ = 232704780. Its totient is φ = 26220672.

The previous prime is 80871047. The next prime is 80871083. The reversal of 80871048 is 84017808.

It can be written as a sum of positive squares in 2 ways, for example, as 57426084 + 23444964 = 7578^2 + 4842^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (80871041) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22290 + ... + 25662.

Almost surely, 280871048 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 80871048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116352390).

80871048 is an abundant number, since it is smaller than the sum of its proper divisors (151833732).

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

80871048 is a wasteful number, since it uses less digits than its factorization.

80871048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428 (or 3415 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 80871048 is about 8992.8331464561. The cubic root of 80871048 is about 432.4451430084.

The spelling of 80871048 in words is "eighty million, eight hundred seventy-one thousand, forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 37 54 72 74 81 108 111 148 162 216 222 296 324 333 444 648 666 888 999 1332 1998 2664 2997 3373 3996 5994 6746 7992 10119 11988 13492 20238 23976 26984 30357 40476 60714 80952 91071 121428 124801 182142 242856 249602 273213 364284 374403 499204 546426 728568 748806 998408 1092852 1123209 1497612 2185704 2246418 2995224 3369627 4492836 6739254 8985672 10108881 13478508 20217762 26957016 40435524 80871048