Search a number
-
+
28027025101 = 47644992467
BaseRepresentation
bin11010000110100010…
…100111011011001101
32200100020210101121201
4122012202213123031
5424344404300401
620513032225501
72011351532305
oct320642473315
980306711551
1028027025101
1110982585869
12552223b291
1328486c092a
1414dc3c6605
15ae0803b01
hex6868a76cd

28027025101 has 8 divisors (see below), whose sum is σ = 28628092800. Its totient is φ = 27426155328.

The previous prime is 28027025087. The next prime is 28027025113. The reversal of 28027025101 is 10152072082.

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 28027025101 - 29 = 28027024589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28027025101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28027025161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256870 + ... + 349336.

It is an arithmetic number, because the mean of its divisors is an integer number (3578511600).

Almost surely, 228027025101 is an apocalyptic number.

It is an amenable number.

28027025101 is a deficient number, since it is larger than the sum of its proper divisors (601067699).

28027025101 is an equidigital number, since it uses as much as digits as its factorization.

28027025101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98963.

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 28027025101 its reverse (10152072082), we get a palindrome (38179097183).

It can be divided in two parts, 280270 and 25101, that added together give a triangular number (305371 = T781).

The spelling of 28027025101 in words is "twenty-eight billion, twenty-seven million, twenty-five thousand, one hundred one".

Divisors: 1 47 6449 92467 303103 4345949 596319683 28027025101