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13380745 = 572913183
BaseRepresentation
bin110011000010…
…110010001001
3221011210221011
4303002302021
511411140440
61154443521
7221506630
oct63026211
927153834
1013380745
11760a174
1245935a1
132a06601
141ac4517
1512949ea
hexcc2c89

13380745 has 16 divisors (see below), whose sum is σ = 18984960. Its totient is φ = 8858304.

The previous prime is 13380743. The next prime is 13380749. The reversal of 13380745 is 54708331.

It is not a de Polignac number, because 13380745 - 21 = 13380743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13380743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5577 + ... + 7606.

It is an arithmetic number, because the mean of its divisors is an integer number (1186560).

Almost surely, 213380745 is an apocalyptic number.

It is an amenable number.

13380745 is a deficient number, since it is larger than the sum of its proper divisors (5604215).

13380745 is a wasteful number, since it uses less digits than its factorization.

13380745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13224.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 13380745 is about 3657.9700654871. The cubic root of 13380745 is about 237.4069515463.

The spelling of 13380745 in words is "thirteen million, three hundred eighty thousand, seven hundred forty-five".

Divisors: 1 5 7 29 35 145 203 1015 13183 65915 92281 382307 461405 1911535 2676149 13380745