Search a number
-
+
12712955 = 52542591
BaseRepresentation
bin110000011111…
…101111111011
3212220212220012
4300133233323
511223303310
61132252135
7213026003
oct60375773
925825805
1012712955
1171a3482
12431104b
132831678
14198d003
1511b1c05
hexc1fbfb

12712955 has 4 divisors (see below), whose sum is σ = 15255552. Its totient is φ = 10170360.

The previous prime is 12712939. The next prime is 12712963. The reversal of 12712955 is 55921721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55921721 = 173289513.

It is not a de Polignac number, because 12712955 - 24 = 12712939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271291 + ... + 1271300.

It is an arithmetic number, because the mean of its divisors is an integer number (3813888).

Almost surely, 212712955 is an apocalyptic number.

12712955 is a deficient number, since it is larger than the sum of its proper divisors (2542597).

12712955 is an equidigital number, since it uses as much as digits as its factorization.

12712955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542596.

The product of its digits is 6300, while the sum is 32.

The square root of 12712955 is about 3565.5231032767. The cubic root of 12712955 is about 233.3899601792.

The spelling of 12712955 in words is "twelve million, seven hundred twelve thousand, nine hundred fifty-five".

Divisors: 1 5 2542591 12712955