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13089685 = 57616131
BaseRepresentation
bin110001111011…
…101110010101
3220122000200011
4301323232111
511322332220
61144320221
7216155230
oct61735625
926560604
1013089685
117430524
124473071
132933c9b
141a4a417
15123865a
hexc7bb95

13089685 has 16 divisors (see below), whose sum is σ = 18248832. Its totient is φ = 8827200.

The previous prime is 13089667. The next prime is 13089709. The reversal of 13089685 is 58698031.

It is a happy number.

It is not a de Polignac number, because 13089685 - 25 = 13089653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931 + ... + 5200.

It is an arithmetic number, because the mean of its divisors is an integer number (1140552).

Almost surely, 213089685 is an apocalyptic number.

It is an amenable number.

13089685 is a deficient number, since it is larger than the sum of its proper divisors (5159147).

13089685 is an equidigital number, since it uses as much as digits as its factorization.

13089685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 13089685 is about 3617.9669705513. The cubic root of 13089685 is about 235.6729466181.

The spelling of 13089685 in words is "thirteen million, eighty-nine thousand, six hundred eighty-five".

Divisors: 1 5 7 35 61 305 427 2135 6131 30655 42917 214585 373991 1869955 2617937 13089685