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28061074357 = 313072948521
BaseRepresentation
bin11010001000100100…
…100000001110110101
32200102121212021102021
4122020210200032311
5424432113334412
620520250113141
72012244124261
oct321044401665
980377767367
1028061074357
111099a821548
12553171b7b1
132852782a14
141502b2b0a1
15ae37cc607
hex6889203b5

28061074357 has 8 divisors (see below), whose sum is σ = 29060632832. Its totient is φ = 27067413600.

The previous prime is 28061074333. The next prime is 28061074373. The reversal of 28061074357 is 75347016082.

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

It is a cyclic number.

It is not a de Polignac number, because 28061074357 - 211 = 28061072309 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 (28061074957) 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, 1464744 + ... + 1483777.

It is an arithmetic number, because the mean of its divisors is an integer number (3632579104).

Almost surely, 228061074357 is an apocalyptic number.

It is an amenable number.

28061074357 is a deficient number, since it is larger than the sum of its proper divisors (999558475).

28061074357 is a wasteful number, since it uses less digits than its factorization.

28061074357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948859.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 28061074357 in words is "twenty-eight billion, sixty-one million, seventy-four thousand, three hundred fifty-seven".

Divisors: 1 31 307 9517 2948521 91404151 905195947 28061074357