[go: up one dir, main page]

Search a number
-
+
27681402 = 2373747379
BaseRepresentation
bin110100110011…
…0001001111010
31221002100202010
41221212021322
524041301102
62425150350
7454200540
oct151461172
957070663
1027681402
11146974a1
12932b3b6
135972838
143967d90
15266bd6c
hex1a6627a

27681402 has 64 divisors (see below), whose sum is σ = 66539520. Its totient is φ = 7511616.

The previous prime is 27681361. The next prime is 27681421. The reversal of 27681402 is 20418672.

It is a self number, because there is not a number n which added to its sum of digits gives 27681402.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 72849 + ... + 73227.

It is an arithmetic number, because the mean of its divisors is an integer number (1039680).

Almost surely, 227681402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27681402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33269760).

27681402 is an abundant number, since it is smaller than the sum of its proper divisors (38858118).

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

27681402 is a wasteful number, since it uses less digits than its factorization.

27681402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 27681402 is about 5261.3118136069. The cubic root of 27681402 is about 302.5027734645.

The spelling of 27681402 in words is "twenty-seven million, six hundred eighty-one thousand, four hundred two".

Divisors: 1 2 3 6 7 14 21 37 42 47 74 94 111 141 222 259 282 329 379 518 658 758 777 987 1137 1554 1739 1974 2274 2653 3478 5217 5306 7959 10434 12173 14023 15918 17813 24346 28046 35626 36519 42069 53439 73038 84138 98161 106878 124691 196322 249382 294483 374073 588966 659081 748146 1318162 1977243 3954486 4613567 9227134 13840701 27681402