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12973919 = 78832099
BaseRepresentation
bin110001011111…
…011101011111
3220102010212112
4301133131133
511310131134
61142024235
7215163560
oct61373537
926363775
1012973919
117361552
12441807b
1328c339a
141a1a167
1512141ce
hexc5f75f

12973919 has 8 divisors (see below), whose sum is σ = 14851200. Its totient is φ = 11102616.

The previous prime is 12973913. The next prime is 12973921. The reversal of 12973919 is 91937921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12973919 - 212 = 12969823 is a prime.

It is a super-2 number, since 2×129739192 = 336645148437122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12973913) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5132 + ... + 7230.

It is an arithmetic number, because the mean of its divisors is an integer number (1856400).

Almost surely, 212973919 is an apocalyptic number.

12973919 is a deficient number, since it is larger than the sum of its proper divisors (1877281).

12973919 is an equidigital number, since it uses as much as digits as its factorization.

12973919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989.

The product of its digits is 30618, while the sum is 41.

The square root of 12973919 is about 3601.9326756618. The cubic root of 12973919 is about 234.9761194988.

The spelling of 12973919 in words is "twelve million, nine hundred seventy-three thousand, nine hundred nineteen".

Divisors: 1 7 883 2099 6181 14693 1853417 12973919