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28658682460 = 2251432934123
BaseRepresentation
bin11010101100001100…
…001100101001011100
32201222021100220121201
4122230030030221130
5432143110314320
621055435005244
72033121532042
oct325414145134
981867326551
1028658682460
1111177096341
125679899824
132919521995
14155c250392
15b2aec670a
hex6ac30ca5c

28658682460 has 12 divisors (see below), whose sum is σ = 60183233208. Its totient is φ = 11463472976.

The previous prime is 28658682419. The next prime is 28658682497. The reversal of 28658682460 is 6428685682.

It is a super-2 number, since 2×286586824602 (a number of 22 digits) contains 22 as substring.

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, 716467042 + ... + 716467081.

It is an arithmetic number, because the mean of its divisors is an integer number (5015269434).

Almost surely, 228658682460 is an apocalyptic number.

28658682460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28658682460 is an abundant number, since it is smaller than the sum of its proper divisors (31524550748).

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

28658682460 is a wasteful number, since it uses less digits than its factorization.

28658682460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432934132 (or 1432934130 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 55.

The spelling of 28658682460 in words is "twenty-eight billion, six hundred fifty-eight million, six hundred eighty-two thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 1432934123 2865868246 5731736492 7164670615 14329341230 28658682460