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5128879 = 7319787
BaseRepresentation
bin10011100100001010101111
3100122120111111
4103210022233
52303111004
6301532451
761411000
oct23441257
910576444
105128879
112993448
121874127
1310a7652
149771a7
156b4a04
hex4e42af

5128879 has 16 divisors (see below), whose sum is σ = 6304000. Its totient is φ = 4159512.

The previous prime is 5128873. The next prime is 5128889. The reversal of 5128879 is 9788215.

It is not a de Polignac number, because 5128879 - 25 = 5128847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5128873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6124 + ... + 6910.

It is an arithmetic number, because the mean of its divisors is an integer number (394000).

Almost surely, 25128879 is an apocalyptic number.

5128879 is a deficient number, since it is larger than the sum of its proper divisors (1175121).

5128879 is an equidigital number, since it uses as much as digits as its factorization.

5128879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 813 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 5128879 is about 2264.7028502653. The cubic root of 5128879 is about 172.4543490485.

The spelling of 5128879 in words is "five million, one hundred twenty-eight thousand, eight hundred seventy-nine".

Divisors: 1 7 19 49 133 343 787 931 5509 6517 14953 38563 104671 269941 732697 5128879