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48731865 = 35713191879
BaseRepresentation
bin1011100111100…
…1011011011001
310101200211112220
42321321123121
544433404430
64500254253
71131133260
oct271713331
9111624486
1048731865
1125564a76
12143a1389
13a133130
1466875d7
154429110
hex2e796d9

48731865 has 64 divisors (see below), whose sum is σ = 101068800. Its totient is φ = 19471104.

The previous prime is 48731833. The next prime is 48731867. The reversal of 48731865 is 56813784.

It is not a de Polignac number, because 48731865 - 25 = 48731833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (48731867) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24996 + ... + 26874.

It is an arithmetic number, because the mean of its divisors is an integer number (1579200).

Almost surely, 248731865 is an apocalyptic number.

It is an amenable number.

48731865 is an abundant number, since it is smaller than the sum of its proper divisors (52336935).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

48731865 is a wasteful number, since it uses less digits than its factorization.

48731865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926.

The product of its digits is 161280, while the sum is 42.

The square root of 48731865 is about 6980.8212267612. The cubic root of 48731865 is about 365.2618749949.

The spelling of 48731865 in words is "forty-eight million, seven hundred thirty-one thousand, eight hundred sixty-five".

Divisors: 1 3 5 7 13 15 19 21 35 39 57 65 91 95 105 133 195 247 273 285 399 455 665 741 1235 1365 1729 1879 1995 3705 5187 5637 8645 9395 13153 24427 25935 28185 35701 39459 65765 73281 107103 122135 170989 178505 197295 249907 366405 464113 512967 535515 749721 854945 1249535 1392339 2320565 2564835 3248791 3748605 6961695 9746373 16243955 48731865