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30800665436 = 2238344944777
BaseRepresentation
bin11100101011110111…
…001101101101011100
32221111112212220212112
4130223313031231130
51001034432243221
622052153053152
72140161223262
oct345367155534
987445786775
1030800665436
1112076199902
125b770b71b8
132b9b21bb28
1416c2908432
15c0408315b
hex72bdcdb5c

30800665436 has 24 divisors (see below), whose sum is σ = 54163468800. Its totient is φ = 15325571072.

The previous prime is 30800665411. The next prime is 30800665447. The reversal of 30800665436 is 63456600803.

It is a junction number, because it is equal to n+sod(n) for n = 30800665393 and 30800665402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665480 + ... + 710256.

It is an arithmetic number, because the mean of its divisors is an integer number (2256811200).

Almost surely, 230800665436 is an apocalyptic number.

It is an amenable number.

30800665436 is a deficient number, since it is larger than the sum of its proper divisors (23362803364).

30800665436 is a wasteful number, since it uses less digits than its factorization.

30800665436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45613 (or 45611 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 30800665436 in words is "thirty billion, eight hundred million, six hundred sixty-five thousand, four hundred thirty-six".

Divisors: 1 2 4 383 449 766 898 1532 1796 44777 89554 171967 179108 343934 687868 17149591 20104873 34299182 40209746 68598364 80419492 7700166359 15400332718 30800665436