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47100069 = 331991813
BaseRepresentation
bin1011001110101…
…1000010100101
310021121221011000
42303223002211
544024200234
64401303513
71111225662
oct263530245
9107557130
1047100069
112464aa85
1213934b99
1399b1483
146380a69
154205899
hex2ceb0a5

47100069 has 16 divisors (see below), whose sum is σ = 73451200. Its totient is φ = 29747088.

The previous prime is 47100061. The next prime is 47100073. The reversal of 47100069 is 96000174.

47100069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47100069 - 23 = 47100061 is a prime.

It is a super-2 number, since 2×471000692 = 4436832999609522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47100061) 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, 45394 + ... + 46419.

It is an arithmetic number, because the mean of its divisors is an integer number (4590700).

Almost surely, 247100069 is an apocalyptic number.

It is an amenable number.

47100069 is a deficient number, since it is larger than the sum of its proper divisors (26351131).

47100069 is a wasteful number, since it uses less digits than its factorization.

47100069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91841 (or 91835 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 47100069 is about 6862.9490017047. The cubic root of 47100069 is about 361.1385481708.

The spelling of 47100069 in words is "forty-seven million, one hundred thousand, sixty-nine".

Divisors: 1 3 9 19 27 57 171 513 91813 275439 826317 1744447 2478951 5233341 15700023 47100069