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48678689 = 251193939
BaseRepresentation
bin1011100110110…
…0011100100001
310101121010121102
42321230130201
544430204224
64455204145
71130522243
oct271543441
9111533542
1048678689
1125529024
1214376655
13a114b77
146672093
1544184ae
hex2e6c721

48678689 has 4 divisors (see below), whose sum is σ = 48872880. Its totient is φ = 48484500.

The previous prime is 48678677. The next prime is 48678691. The reversal of 48678689 is 98687684.

48678689 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 not a de Polignac number, because 48678689 - 24 = 48678673 is a prime.

It is a super-2 number, since 2×486786892 = 4739229525517442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48678659) 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, 96719 + ... + 97220.

It is an arithmetic number, because the mean of its divisors is an integer number (12218220).

Almost surely, 248678689 is an apocalyptic number.

It is an amenable number.

48678689 is a deficient number, since it is larger than the sum of its proper divisors (194191).

48678689 is a wasteful number, since it uses less digits than its factorization.

48678689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194190.

The product of its digits is 4644864, while the sum is 56.

The square root of 48678689 is about 6977.0114662368. The cubic root of 48678689 is about 365.1289692491.

The spelling of 48678689 in words is "forty-eight million, six hundred seventy-eight thousand, six hundred eighty-nine".

Divisors: 1 251 193939 48678689