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12973106 = 26486553
BaseRepresentation
bin110001011111…
…010000110010
3220102002202102
4301133100302
511310114411
61142020402
7215161316
oct61372062
926362672
1012973106
117360983
124417702
1328c2bc3
141a19b46
151213d3b
hexc5f432

12973106 has 4 divisors (see below), whose sum is σ = 19459662. Its totient is φ = 6486552.

The previous prime is 12973099. The next prime is 12973109. The reversal of 12973106 is 60137921.

12973106 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: 60137921 = 102158901.

It can be written as a sum of positive squares in only one way, i.e., 9517225 + 3455881 = 3085^2 + 1859^2 .

It is not an unprimeable number, because it can be changed into a prime (12973109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3243275 + ... + 3243278.

Almost surely, 212973106 is an apocalyptic number.

12973106 is a deficient number, since it is larger than the sum of its proper divisors (6486556).

12973106 is an equidigital number, since it uses as much as digits as its factorization.

12973106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486555.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 12973106 is about 3601.8198178143. The cubic root of 12973106 is about 234.9712112010.

The spelling of 12973106 in words is "twelve million, nine hundred seventy-three thousand, one hundred six".

Divisors: 1 2 6486553 12973106