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180681042 = 2330113507
BaseRepresentation
bin10101100010011…
…11100101010010
3110120222112210110
422301033211102
5332223243132
625532342150
74322522613
oct1261174522
9416875713
10180681042
1192a98383
1250614956
132b581b79
1419dd3c0a
1510ce01cc
hexac4f952

180681042 has 8 divisors (see below), whose sum is σ = 361362096. Its totient is φ = 60227012.

The previous prime is 180681037. The next prime is 180681047. The reversal of 180681042 is 240186081.

180681042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (180681037) and next prime (180681047).

It is a sphenic number, since it is the product of 3 distinct primes.

180681042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (180681047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15056748 + ... + 15056759.

It is an arithmetic number, because the mean of its divisors is an integer number (45170262).

Almost surely, 2180681042 is an apocalyptic number.

180681042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

180681042 is a wasteful number, since it uses less digits than its factorization.

180681042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30113512.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 180681042 is about 13441.7648394844. The cubic root of 180681042 is about 565.3328156361.

It can be divided in two parts, 18068 and 1042, that added together give a triangular number (19110 = T195).

The spelling of 180681042 in words is "one hundred eighty million, six hundred eighty-one thousand, forty-two".

Divisors: 1 2 3 6 30113507 60227014 90340521 180681042