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28058048451 = 327143909309
BaseRepresentation
bin11010001000011000…
…111101011111000011
32200102102011112122200
4122020120331133003
5424430330022301
620520101204243
72012206322346
oct321030753703
980372145580
1028058048451
11109990450a4
125530700683
132851c63644
14150258045d
15ae33d0c86
hex68863d7c3

28058048451 has 12 divisors (see below), whose sum is σ = 41099114160. Its totient is φ = 18441909360.

The previous prime is 28058048399. The next prime is 28058048461. The reversal of 28058048451 is 15484085082.

28058048451 is a `hidden beast` number, since 2 + 80 + 5 + 80 + 48 + 451 = 666.

It is not a de Polignac number, because 28058048451 - 26 = 28058048387 is a prime.

It is a super-4 number, since 4×280580484514 (a number of 43 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28058048397 and 28058048406.

It is not an unprimeable number, because it can be changed into a prime (28058048461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21954016 + ... + 21955293.

It is an arithmetic number, because the mean of its divisors is an integer number (3424926180).

Almost surely, 228058048451 is an apocalyptic number.

28058048451 is a deficient number, since it is larger than the sum of its proper divisors (13041065709).

28058048451 is a wasteful number, since it uses less digits than its factorization.

28058048451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43909386 (or 43909383 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 45.

The spelling of 28058048451 in words is "twenty-eight billion, fifty-eight million, forty-eight thousand, four hundred fifty-one".

Divisors: 1 3 9 71 213 639 43909309 131727927 395183781 3117560939 9352682817 28058048451