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30800665437 = 343777234527
BaseRepresentation
bin11100101011110111…
…001101101101011101
32221111112212220212120
4130223313031231131
51001034432243222
622052153053153
72140161223263
oct345367155535
987445786776
1030800665437
1112076199903
125b770b71b9
132b9b21bb29
1416c2908433
15c0408315c
hex72bdcdb5d

30800665437 has 8 divisors (see below), whose sum is σ = 41068667136. Its totient is φ = 20533220352.

The previous prime is 30800665411. The next prime is 30800665447. The reversal of 30800665437 is 73456600803.

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

It is not a de Polignac number, because 30800665437 - 223 = 30792276829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30800665447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14068 + ... + 248594.

It is an arithmetic number, because the mean of its divisors is an integer number (5133583392).

Almost surely, 230800665437 is an apocalyptic number.

It is an amenable number.

30800665437 is a deficient number, since it is larger than the sum of its proper divisors (10268001699).

30800665437 is a wasteful number, since it uses less digits than its factorization.

30800665437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278307.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 30800665437 in words is "thirty billion, eight hundred million, six hundred sixty-five thousand, four hundred thirty-seven".

Divisors: 1 3 43777 131331 234527 703581 10266888479 30800665437