Search a number
-
+
12752538789 = 331137124073
BaseRepresentation
bin10111110000001110…
…00100110010100101
31012220202011002111110
423320013010302211
5202104122220124
65505231055233
7631006535244
oct137007046245
935822132443
1012752538789
115454526161
12257a971519
13128303aa53
1488d95095b
154e9870029
hex2f81c4ca5

12752538789 has 8 divisors (see below), whose sum is σ = 17551881472. Its totient is φ = 8227444320.

The previous prime is 12752538779. The next prime is 12752538803. The reversal of 12752538789 is 98783525721.

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

It is a de Polignac number, because none of the positive numbers 2k-12752538789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12752538719) 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, 68561944 + ... + 68562129.

It is an arithmetic number, because the mean of its divisors is an integer number (2193985184).

Almost surely, 212752538789 is an apocalyptic number.

It is an amenable number.

12752538789 is a deficient number, since it is larger than the sum of its proper divisors (4799342683).

12752538789 is a wasteful number, since it uses less digits than its factorization.

12752538789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137124107.

The product of its digits is 8467200, while the sum is 57.

The spelling of 12752538789 in words is "twelve billion, seven hundred fifty-two million, five hundred thirty-eight thousand, seven hundred eighty-nine".

Divisors: 1 3 31 93 137124073 411372219 4250846263 12752538789