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12874693 = 13990361
BaseRepresentation
bin110001000111…
…001111000101
3220020002202111
4301013033011
511243442233
61135541021
7214301356
oct61071705
926202674
1012874693
1172a3a47
12438a771
13288a180
1419d1d2d
1511e4acd
hexc473c5

12874693 has 4 divisors (see below), whose sum is σ = 13865068. Its totient is φ = 11884320.

The previous prime is 12874681. The next prime is 12874717. The reversal of 12874693 is 39647821.

12874693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39647821 = 131930059.

It can be written as a sum of positive squares in 2 ways, for example, as 4848804 + 8025889 = 2202^2 + 2833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12874693 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 (12874633) 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, 495168 + ... + 495193.

It is an arithmetic number, because the mean of its divisors is an integer number (3466267).

Almost surely, 212874693 is an apocalyptic number.

12874693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12874693 is a deficient number, since it is larger than the sum of its proper divisors (990375).

12874693 is an equidigital number, since it uses as much as digits as its factorization.

12874693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990374.

The product of its digits is 72576, while the sum is 40.

The square root of 12874693 is about 3588.1322439397. The cubic root of 12874693 is about 234.3755444847.

The spelling of 12874693 in words is "twelve million, eight hundred seventy-four thousand, six hundred ninety-three".

Divisors: 1 13 990361 12874693