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28030358384 = 247250271057
BaseRepresentation
bin11010000110101111…
…010101001101110000
32200100111001202000122
4122012233111031300
5424401232432014
620513231505412
72011422054320
oct320657251560
980314052018
1028030358384
1110984452146
125523388268
1328492b9ba2
1414dca13280
15ae0c6158e
hex686bd5370

28030358384 has 20 divisors (see below), whose sum is σ = 62067222384. Its totient is φ = 12013010688.

The previous prime is 28030358347. The next prime is 28030358417. The reversal of 28030358384 is 48385303082.

It is a super-2 number, since 2×280303583842 (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125135417 + ... + 125135640.

Almost surely, 228030358384 is an apocalyptic number.

It is an amenable number.

28030358384 is an abundant number, since it is smaller than the sum of its proper divisors (34036864000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28030358384 is a wasteful number, since it uses less digits than its factorization.

28030358384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250271072 (or 250271066 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 28030358384 in words is "twenty-eight billion, thirty million, three hundred fifty-eight thousand, three hundred eighty-four".

Divisors: 1 2 4 7 8 14 16 28 56 112 250271057 500542114 1001084228 1751897399 2002168456 3503794798 4004336912 7007589596 14015179192 28030358384