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30800055097 = 732232811433
BaseRepresentation
bin11100101011110100…
…111000101100111001
32221111111201220122101
4130223310320230321
51001034303230342
622052132023401
72140153102000
oct345364705471
987444656571
1030800055097
1112075912299
125b76a61b61
132b9b067096
1416c27c9c37
15c03eb23b7
hex72bd38b39

30800055097 has 32 divisors (see below), whose sum is σ = 36233164800. Its totient is φ = 26169857280.

The previous prime is 30800055079. The next prime is 30800055119. The reversal of 30800055097 is 79055000803.

It is a de Polignac number, because none of the positive numbers 2k-30800055097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30800055017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21492693 + ... + 21494125.

It is an arithmetic number, because the mean of its divisors is an integer number (1132286400).

Almost surely, 230800055097 is an apocalyptic number.

It is an amenable number.

30800055097 is a deficient number, since it is larger than the sum of its proper divisors (5433109703).

30800055097 is a wasteful number, since it uses less digits than its factorization.

30800055097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958 (or 1944 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 30800055097 in words is "thirty billion, eight hundred million, fifty-five thousand, ninety-seven".

Divisors: 1 7 49 223 281 343 1433 1561 1967 10031 10927 13769 62663 70217 76489 96383 319559 402673 438641 491519 2236913 2818711 3070487 15658391 19730977 21493409 89796079 109608737 138116839 628572553 4400007871 30800055097