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47000385 = 3352315137
BaseRepresentation
bin1011001101001…
…0101101000001
310021102212102000
42303102231001
544013003020
64355214213
71110332235
oct263225501
9107385360
1047000385
11245920a3
12138a7369
139977ca3
1463565c5
1541d6090
hex2cd2b41

47000385 has 32 divisors (see below), whose sum is σ = 87194880. Its totient is φ = 23975424.

The previous prime is 47000383. The next prime is 47000389. The reversal of 47000385 is 58300074.

It is not a de Polignac number, because 47000385 - 21 = 47000383 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (47000381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4464 + ... + 10673.

It is an arithmetic number, because the mean of its divisors is an integer number (2724840).

Almost surely, 247000385 is an apocalyptic number.

47000385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47000385 is a deficient number, since it is larger than the sum of its proper divisors (40194495).

47000385 is a wasteful number, since it uses less digits than its factorization.

47000385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15174 (or 15168 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 47000385 is about 6855.6826793544. The cubic root of 47000385 is about 360.8835933999.

The spelling of 47000385 in words is "forty-seven million, three hundred eighty-five", and thus it is an aban number.

Divisors: 1 3 5 9 15 23 27 45 69 115 135 207 345 621 1035 3105 15137 45411 75685 136233 227055 348151 408699 681165 1044453 1740755 2043495 3133359 5222265 9400077 15666795 47000385