Search a number
-
+
28018048848 = 243583709351
BaseRepresentation
bin11010000110000000…
…010111111101010000
32200022121220100111220
4122012000113331100
5424340110030343
620512112005040
72011212325416
oct320600277520
980277810456
1028018048848
1110978504879
12551b230780
13284689a03a
1414db12b2b6
15adeb2e183
hex686017f50

28018048848 has 20 divisors (see below), whose sum is σ = 72379959648. Its totient is φ = 9339349600.

The previous prime is 28018048847. The next prime is 28018048871. The reversal of 28018048848 is 84884081082.

It is a super-2 number, since 2×280180488482 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28018048848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28018048841) 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, 291854628 + ... + 291854723.

Almost surely, 228018048848 is an apocalyptic number.

It is an amenable number.

28018048848 is an abundant number, since it is smaller than the sum of its proper divisors (44361910800).

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

28018048848 is a wasteful number, since it uses less digits than its factorization.

28018048848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583709362 (or 583709356 counting only the distinct ones).

The product of its (nonzero) digits is 1048576, while the sum is 51.

The spelling of 28018048848 in words is "twenty-eight billion, eighteen million, forty-eight thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 583709351 1167418702 1751128053 2334837404 3502256106 4669674808 7004512212 9339349616 14009024424 28018048848