Search a number
-
+
12874901 = 13990377
BaseRepresentation
bin110001000111…
…010010010101
3220020010001012
4301013102111
511243444101
61135542005
7214302104
oct61072225
926203035
1012874901
1172a4116
12438a905
13288a2b0
1419d203b
1511e4bbb
hexc47495

12874901 has 4 divisors (see below), whose sum is σ = 13865292. Its totient is φ = 11884512.

The previous prime is 12874859. The next prime is 12874903. The reversal of 12874901 is 10947821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3880900 + 8994001 = 1970^2 + 2999^2 .

It is a cyclic number.

It is not a de Polignac number, because 12874901 - 218 = 12612757 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 (12874903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495176 + ... + 495201.

It is an arithmetic number, because the mean of its divisors is an integer number (3466323).

Almost surely, 212874901 is an apocalyptic number.

It is an amenable number.

12874901 is a deficient number, since it is larger than the sum of its proper divisors (990391).

12874901 is an equidigital number, since it uses as much as digits as its factorization.

12874901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990390.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 12874901 is about 3588.1612282616. The cubic root of 12874901 is about 234.3768066468.

The spelling of 12874901 in words is "twelve million, eight hundred seventy-four thousand, nine hundred one".

Divisors: 1 13 990377 12874901