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3128471875 = 551815531
BaseRepresentation
bin1011101001111000…
…1011000101000011
322002000202211121201
42322132023011003
522401342100000
61234234002031
7140345400154
oct27236130503
98060684551
103128471875
111365a39251
12733876317
133ab1b65b9
142196c992b
151349be96a
hexba78b143

3128471875 has 24 divisors (see below), whose sum is σ = 3932654544. Its totient is φ = 2488500000.

The previous prime is 3128471849. The next prime is 3128471887. The reversal of 3128471875 is 5781748213.

3128471875 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 3128471875 - 225 = 3094917443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562860 + ... + 568390.

It is an arithmetic number, because the mean of its divisors is an integer number (163860606).

Almost surely, 23128471875 is an apocalyptic number.

3128471875 is a deficient number, since it is larger than the sum of its proper divisors (804182669).

3128471875 is an frugal number, since it uses more digits than its factorization.

3128471875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737 (or 5717 counting only the distinct ones).

The product of its digits is 376320, while the sum is 46.

The square root of 3128471875 is about 55932.7442112400. The cubic root of 3128471875 is about 1462.5500993382.

The spelling of 3128471875 in words is "three billion, one hundred twenty-eight million, four hundred seventy-one thousand, eight hundred seventy-five".

Divisors: 1 5 25 125 181 625 905 3125 4525 5531 22625 27655 113125 138275 565625 691375 1001111 3456875 5005555 17284375 25027775 125138875 625694375 3128471875