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13345039 = 47283937
BaseRepresentation
bin110010111010…
…000100001111
3221002222221201
4302322010033
511404020124
61154010331
7221300551
oct62720417
927088851
1013345039
117595364
1245769a7
1329c3296
141ab54d1
151289144
hexcba10f

13345039 has 4 divisors (see below), whose sum is σ = 13629024. Its totient is φ = 13061056.

The previous prime is 13345027. The next prime is 13345063. The reversal of 13345039 is 93054331.

13345039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93054331 = 97959323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13345039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13344998 and 13345016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13345009) 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, 141922 + ... + 142015.

It is an arithmetic number, because the mean of its divisors is an integer number (3407256).

Almost surely, 213345039 is an apocalyptic number.

13345039 is a deficient number, since it is larger than the sum of its proper divisors (283985).

13345039 is an equidigital number, since it uses as much as digits as its factorization.

13345039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283984.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 13345039 is about 3653.0862294778. The cubic root of 13345039 is about 237.1955930143.

The spelling of 13345039 in words is "thirteen million, three hundred forty-five thousand, thirty-nine".

Divisors: 1 47 283937 13345039