Search a number
-
+
28180324083 = 371132301991
BaseRepresentation
bin11010001111101011…
…011001111011110011
32200201221020210021210
4122033223121323303
5430203130332313
620540150051203
72015222542152
oct321753317363
980657223253
1028180324083
1110a5107063a
125565649b03
1328713a62a2
1415148cd599
15aeded59c3
hex68fad9ef3

28180324083 has 8 divisors (see below), whose sum is σ = 38102973696. Its totient is φ = 18522278600.

The previous prime is 28180324033. The next prime is 28180324121. The reversal of 28180324083 is 38042308182.

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

It is a cyclic number.

It is not a de Polignac number, because 28180324083 - 29 = 28180323571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28180324033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66150783 + ... + 66151208.

It is an arithmetic number, because the mean of its divisors is an integer number (4762871712).

Almost surely, 228180324083 is an apocalyptic number.

28180324083 is a deficient number, since it is larger than the sum of its proper divisors (9922649613).

28180324083 is a wasteful number, since it uses less digits than its factorization.

28180324083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132302065.

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 28180324083 in words is "twenty-eight billion, one hundred eighty million, three hundred twenty-four thousand, eighty-three".

Divisors: 1 3 71 213 132301991 396905973 9393441361 28180324083