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48638641 = 79615679
BaseRepresentation
bin1011100110001…
…0101010110001
310101112002200011
42321202222301
544422414031
64454254521
71130264422
oct271425261
9111462604
1048638641
1125500a27
1214357441
13a0cc87c
146661649
15440b6b1
hex2e62ab1

48638641 has 4 divisors (see below), whose sum is σ = 49254400. Its totient is φ = 48022884.

The previous prime is 48638627. The next prime is 48638647. The reversal of 48638641 is 14683684.

48638641 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-48638641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 48638594 and 48638603.

It is not an unprimeable number, because it can be changed into a prime (48638647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307761 + ... + 307918.

It is an arithmetic number, because the mean of its divisors is an integer number (12313600).

Almost surely, 248638641 is an apocalyptic number.

It is an amenable number.

48638641 is a deficient number, since it is larger than the sum of its proper divisors (615759).

48638641 is an equidigital number, since it uses as much as digits as its factorization.

48638641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615758.

The product of its digits is 110592, while the sum is 40.

The square root of 48638641 is about 6974.1408789900. The cubic root of 48638641 is about 365.0288111366.

The spelling of 48638641 in words is "forty-eight million, six hundred thirty-eight thousand, six hundred forty-one".

Divisors: 1 79 615679 48638641