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47975748 = 2233997979
BaseRepresentation
bin1011011100000…
…0110101000100
310100021102100120
42313000311010
544240210443
64432141540
71121533662
oct267006504
9110242316
1047975748
1125098987
12140978b0
139c29c22
14652bc32
15432a083
hex2dc0d44

47975748 has 12 divisors (see below), whose sum is σ = 111943440. Its totient is φ = 15991912.

The previous prime is 47975713. The next prime is 47975777. The reversal of 47975748 is 84757974.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 47975748.

It is an unprimeable number.

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, 1998978 + ... + 1999001.

It is an arithmetic number, because the mean of its divisors is an integer number (9328620).

Almost surely, 247975748 is an apocalyptic number.

It is an amenable number.

47975748 is an abundant number, since it is smaller than the sum of its proper divisors (63967692).

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

47975748 is a wasteful number, since it uses less digits than its factorization.

47975748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997986 (or 3997984 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 51.

The square root of 47975748 is about 6926.4527718017. The cubic root of 47975748 is about 363.3629015767.

The spelling of 47975748 in words is "forty-seven million, nine hundred seventy-five thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 12 3997979 7995958 11993937 15991916 23987874 47975748