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47975247 = 351910391
BaseRepresentation
bin1011011100000…
…0101101001111
310100021101200000
42313000231033
544240201442
64432135343
71121532345
oct267005517
9110241600
1047975247
1125098571
1214097553
139c29928
14652b995
154329d4c
hex2dc0b4f

47975247 has 24 divisors (see below), whose sum is σ = 75653760. Its totient is φ = 30297240.

The previous prime is 47975233. The next prime is 47975261. The reversal of 47975247 is 74257974.

It is an interprime number because it is at equal distance from previous prime (47975233) and next prime (47975261).

It is not a de Polignac number, because 47975247 - 211 = 47973199 is a prime.

It is a super-2 number, since 2×479752472 = 4603248649422018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47975287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 579 + ... + 9812.

It is an arithmetic number, because the mean of its divisors is an integer number (3152240).

Almost surely, 247975247 is an apocalyptic number.

47975247 is a deficient number, since it is larger than the sum of its proper divisors (27678513).

47975247 is a wasteful number, since it uses less digits than its factorization.

47975247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10425 (or 10413 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 47975247 is about 6926.4166060092. The cubic root of 47975247 is about 363.3616367331.

The spelling of 47975247 in words is "forty-seven million, nine hundred seventy-five thousand, two hundred forty-seven".

Divisors: 1 3 9 19 27 57 81 171 243 513 1539 4617 10391 31173 93519 197429 280557 592287 841671 1776861 2525013 5330583 15991749 47975247