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47980887 = 379443457
BaseRepresentation
bin1011011100001…
…0000101010111
310100021200101220
42313002011113
544240342022
64432221423
71121554653
oct267020527
9110250356
1047980887
11250a1829
121409a873
139c2c376
14652da63
15432b85c
hex2dc2157

47980887 has 16 divisors (see below), whose sum is σ = 65072640. Its totient is φ = 31442112.

The previous prime is 47980861. The next prime is 47980969. The reversal of 47980887 is 78808974.

47980887 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 47980887 - 211 = 47978839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47980837) 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, 104763 + ... + 105219.

It is an arithmetic number, because the mean of its divisors is an integer number (4067040).

Almost surely, 247980887 is an apocalyptic number.

47980887 is a deficient number, since it is larger than the sum of its proper divisors (17091753).

47980887 is a wasteful number, since it uses less digits than its factorization.

47980887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 47980887 is about 6926.8237309751. The cubic root of 47980887 is about 363.3758751822.

The spelling of 47980887 in words is "forty-seven million, nine hundred eighty thousand, eight hundred eighty-seven".

Divisors: 1 3 79 237 443 457 1329 1371 34997 36103 104991 108309 202451 607353 15993629 47980887