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28115110671 = 326561352837
BaseRepresentation
bin11010001011110010…
…101000101100001111
32200120101112121022020
4122023302220230033
5430034432020141
620525500221223
72013501332454
oct321362505417
980511477266
1028115110671
1110a1827985a
12554783a813
132860a2237b
141509d9582b
15ae8403266
hex68bca8b0f

28115110671 has 8 divisors (see below), whose sum is σ = 37488331824. Its totient is φ = 18742648320.

The previous prime is 28115110631. The next prime is 28115110679. The reversal of 28115110671 is 17601151182.

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

It is not a de Polignac number, because 28115110671 - 29 = 28115110159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28115110679) 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, 96736 + ... + 256101.

It is an arithmetic number, because the mean of its divisors is an integer number (4686041478).

Almost surely, 228115110671 is an apocalyptic number.

28115110671 is a deficient number, since it is larger than the sum of its proper divisors (9373221153).

28115110671 is a wasteful number, since it uses less digits than its factorization.

28115110671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379401.

The product of its (nonzero) digits is 3360, while the sum is 33.

The spelling of 28115110671 in words is "twenty-eight billion, one hundred fifteen million, one hundred ten thousand, six hundred seventy-one".

Divisors: 1 3 26561 79683 352837 1058511 9371703557 28115110671