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12973413 = 34324471
BaseRepresentation
bin110001011111…
…010101100101
3220102010011210
4301133111211
511310122123
61142022033
7215162235
oct61372545
926363153
1012973413
117361132
124417919
1328c309b
141a19cc5
151213e93
hexc5f565

12973413 has 4 divisors (see below), whose sum is σ = 17297888. Its totient is φ = 8648940.

The previous prime is 12973399. The next prime is 12973423. The reversal of 12973413 is 31437921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31437921 = 310479307.

It is not a de Polignac number, because 12973413 - 28 = 12973157 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 (12973423) 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, 2162233 + ... + 2162238.

It is an arithmetic number, because the mean of its divisors is an integer number (4324472).

Almost surely, 212973413 is an apocalyptic number.

It is an amenable number.

12973413 is a deficient number, since it is larger than the sum of its proper divisors (4324475).

12973413 is an equidigital number, since it uses as much as digits as its factorization.

12973413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324474.

The product of its digits is 4536, while the sum is 30.

The square root of 12973413 is about 3601.8624349078. The cubic root of 12973413 is about 234.9730646660.

The spelling of 12973413 in words is "twelve million, nine hundred seventy-three thousand, four hundred thirteen".

Divisors: 1 3 4324471 12973413