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5128881 = 310116927
BaseRepresentation
bin10011100100001010110001
3100122120111120
4103210022301
52303111011
6301532453
761411002
oct23441261
910576446
105128881
11299344a
121874129
1310a7654
149771a9
156b4a06
hex4e42b1

5128881 has 8 divisors (see below), whose sum is σ = 6906624. Its totient is φ = 3385200.

The previous prime is 5128873. The next prime is 5128889. The reversal of 5128881 is 1888215.

It is an interprime number because it is at equal distance from previous prime (5128873) and next prime (5128889).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5128881 - 23 = 5128873 is a prime.

It is a super-2 number, since 2×51288812 = 52610840624322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5128889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8161 + ... + 8766.

It is an arithmetic number, because the mean of its divisors is an integer number (863328).

Almost surely, 25128881 is an apocalyptic number.

It is an amenable number.

5128881 is a deficient number, since it is larger than the sum of its proper divisors (1777743).

5128881 is a wasteful number, since it uses less digits than its factorization.

5128881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17031.

The product of its digits is 5120, while the sum is 33.

The square root of 5128881 is about 2264.7032918243. The cubic root of 5128881 is about 172.4543714646.

The spelling of 5128881 in words is "five million, one hundred twenty-eight thousand, eight hundred eighty-one".

Divisors: 1 3 101 303 16927 50781 1709627 5128881