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13148643 = 34382881
BaseRepresentation
bin110010001010…
…000111100011
3220202000112210
4302022013203
511331224033
61145453203
7216522144
oct62120743
926660483
1013148643
117470852
1244a1203
132954a81
141a63acb
15124ad63
hexc8a1e3

13148643 has 4 divisors (see below), whose sum is σ = 17531528. Its totient is φ = 8765760.

The previous prime is 13148609. The next prime is 13148651. The reversal of 13148643 is 34684131.

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

It is not a de Polignac number, because 13148643 - 29 = 13148131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13148643.

It is not an unprimeable number, because it can be changed into a prime (13148693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2191438 + ... + 2191443.

It is an arithmetic number, because the mean of its divisors is an integer number (4382882).

Almost surely, 213148643 is an apocalyptic number.

13148643 is a deficient number, since it is larger than the sum of its proper divisors (4382885).

13148643 is an equidigital number, since it uses as much as digits as its factorization.

13148643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4382884.

The product of its digits is 6912, while the sum is 30.

The square root of 13148643 is about 3626.1057623848. The cubic root of 13148643 is about 236.0262527053.

The spelling of 13148643 in words is "thirteen million, one hundred forty-eight thousand, six hundred forty-three".

Divisors: 1 3 4382881 13148643