Search a number
-
+
48829781 = 7111348781
BaseRepresentation
bin1011101001000…
…1010101010101
310101212210212102
42322101111111
5100000023111
64502331445
71132021610
oct272212525
9111783772
1048829781
11256215a0
1214429b85
13a168880
1466b1177
15444813b
hex2e91555

48829781 has 16 divisors (see below), whose sum is σ = 65563008. Its totient is φ = 35121600.

The previous prime is 48829721. The next prime is 48829789. The reversal of 48829781 is 18792884.

48829781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 48829781 - 210 = 48828757 is a prime.

It is a super-2 number, since 2×488297812 = 4768695025015922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48829789) 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 15 ways as a sum of consecutive naturals, for example, 23390 + ... + 25391.

It is an arithmetic number, because the mean of its divisors is an integer number (4097688).

Almost surely, 248829781 is an apocalyptic number.

It is an amenable number.

48829781 is a deficient number, since it is larger than the sum of its proper divisors (16733227).

48829781 is a wasteful number, since it uses less digits than its factorization.

48829781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48812.

The product of its digits is 258048, while the sum is 47.

The square root of 48829781 is about 6987.8309223964. The cubic root of 48829781 is about 365.5063492178.

The spelling of 48829781 in words is "forty-eight million, eight hundred twenty-nine thousand, seven hundred eighty-one".

Divisors: 1 7 11 13 77 91 143 1001 48781 341467 536591 634153 3756137 4439071 6975683 48829781