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912875047 = 7289209327
BaseRepresentation
bin110110011010010…
…101111000100111
32100121201212010221
4312122111320213
53332144000142
6230330025211
731423211200
oct6632257047
92317655127
10912875047
11429326597
12215878207
13117183a66
148934c5a7
1555221767
hex36695e27

912875047 has 12 divisors (see below), whose sum is σ = 1073852640. Its totient is φ = 773668896.

The previous prime is 912875023. The next prime is 912875069. The reversal of 912875047 is 740578219.

It is a de Polignac number, because none of the positive numbers 2k-912875047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 912874994 and 912875012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912875017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100303 + ... + 109024.

It is an arithmetic number, because the mean of its divisors is an integer number (89487720).

Almost surely, 2912875047 is an apocalyptic number.

912875047 is a deficient number, since it is larger than the sum of its proper divisors (160977593).

912875047 is a wasteful number, since it uses less digits than its factorization.

912875047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209430 (or 209423 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 912875047 is about 30213.8221183617. The cubic root of 912875047 is about 970.0715740575.

The spelling of 912875047 in words is "nine hundred twelve million, eight hundred seventy-five thousand, forty-seven".

Divisors: 1 7 49 89 623 4361 209327 1465289 10257023 18630103 130410721 912875047