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7971314 = 213306589
BaseRepresentation
bin11110011010000111110010
3112222222120212
4132122013302
54020040224
6442504122
7124516661
oct36320762
915888525
107971314
114554a6a
122805042
131861370
1410b6dd8
15a76d0e
hex79a1f2

7971314 has 8 divisors (see below), whose sum is σ = 12876780. Its totient is φ = 3679056.

The previous prime is 7971311. The next prime is 7971323. The reversal of 7971314 is 4131797.

It can be written as a sum of positive squares in 2 ways, for example, as 7924225 + 47089 = 2815^2 + 217^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7971311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153269 + ... + 153320.

Almost surely, 27971314 is an apocalyptic number.

7971314 is a deficient number, since it is larger than the sum of its proper divisors (4905466).

7971314 is a wasteful number, since it uses less digits than its factorization.

7971314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306604.

The product of its digits is 5292, while the sum is 32.

The square root of 7971314 is about 2823.3515544473. The cubic root of 7971314 is about 199.7606637049.

The spelling of 7971314 in words is "seven million, nine hundred seventy-one thousand, three hundred fourteen".

Divisors: 1 2 13 26 306589 613178 3985657 7971314