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13040867 = 71862981
BaseRepresentation
bin110001101111…
…110011100011
3220112112201002
4301233303203
511314301432
61143302215
7215563010
oct61576343
926475632
1013040867
1173a7884
12444a96b
1329179b8
141a36707
151228e62
hexc6fce3

13040867 has 4 divisors (see below), whose sum is σ = 14903856. Its totient is φ = 11177880.

The previous prime is 13040861. The next prime is 13040873. The reversal of 13040867 is 76804031.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13040861) and next prime (13040873).

It is not a de Polignac number, because 13040867 - 210 = 13039843 is a prime.

It is a super-2 number, since 2×130408672 = 340128424223378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13040861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 931484 + ... + 931497.

It is an arithmetic number, because the mean of its divisors is an integer number (3725964).

Almost surely, 213040867 is an apocalyptic number.

13040867 is a deficient number, since it is larger than the sum of its proper divisors (1862989).

13040867 is an equidigital number, since it uses as much as digits as its factorization.

13040867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862988.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 13040867 is about 3611.2140617803. The cubic root of 13040867 is about 235.3796007671.

Adding to 13040867 its reverse (76804031), we get a palindrome (89844898).

The spelling of 13040867 in words is "thirteen million, forty thousand, eight hundred sixty-seven".

Divisors: 1 7 1862981 13040867