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47047474758 = 2319616765527
BaseRepresentation
bin101011110100001111…
…110111111001000110
311111102211010100102010
4223310033313321012
51232323123143013
633340250355050
73253610636304
oct536417677106
9144384110363
1047047474758
1118a53089149
12915012ba86
13458a16b37b
1423c4565274
15135557c7c3
hexaf43f7e46

47047474758 has 32 divisors (see below), whose sum is σ = 100671056640. Its totient is φ = 14613536160.

The previous prime is 47047474757. The next prime is 47047474807. The reversal of 47047474758 is 85747474074.

It is a super-2 number, since 2×470474747582 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 47047474698 and 47047474707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47047474757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3375810 + ... + 3389717.

It is an arithmetic number, because the mean of its divisors is an integer number (3145970520).

Almost surely, 247047474758 is an apocalyptic number.

47047474758 is an abundant number, since it is smaller than the sum of its proper divisors (53623581882).

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

47047474758 is a wasteful number, since it uses less digits than its factorization.

47047474758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6765612.

The product of its (nonzero) digits is 24586240, while the sum is 57.

The spelling of 47047474758 in words is "forty-seven billion, forty-seven million, four hundred seventy-four thousand, seven hundred fifty-eight".

Divisors: 1 2 3 6 19 38 57 61 114 122 183 366 1159 2318 3477 6954 6765527 13531054 20296581 40593162 128545013 257090026 385635039 412697147 771270078 825394294 1238091441 2476182882 7841245793 15682491586 23523737379 47047474758