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13956245 = 58573257
BaseRepresentation
bin110101001111…
…010010010101
3222021001100222
4311033102111
512033044440
61215044125
7226424522
oct65172225
928231328
1013956245
117972596
124810645
132b78544
141bd4149
15135a2b5
hexd4f495

13956245 has 8 divisors (see below), whose sum is σ = 16772184. Its totient is φ = 11148544.

The previous prime is 13956233. The next prime is 13956247. The reversal of 13956245 is 54265931.

It can be written as a sum of positive squares in 4 ways, for example, as 6848689 + 7107556 = 2617^2 + 2666^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13956245 - 212 = 13952149 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 (13956247) 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 7 ways as a sum of consecutive naturals, for example, 2657 + ... + 5913.

It is an arithmetic number, because the mean of its divisors is an integer number (2096523).

Almost surely, 213956245 is an apocalyptic number.

It is an amenable number.

13956245 is a deficient number, since it is larger than the sum of its proper divisors (2815939).

13956245 is an equidigital number, since it uses as much as digits as its factorization.

13956245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119.

The product of its digits is 32400, while the sum is 35.

The square root of 13956245 is about 3735.8058033040. The cubic root of 13956245 is about 240.7628792074.

The spelling of 13956245 in words is "thirteen million, nine hundred fifty-six thousand, two hundred forty-five".

Divisors: 1 5 857 3257 4285 16285 2791249 13956245