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30892684181 = 199439353621
BaseRepresentation
bin11100110001010110…
…001111001110010101
32221201222000221212012
4130301112033032111
51001232011343211
622105241234005
72142356324432
oct346126171625
987658027765
1030892684181
1112113129957
125ba1a92905
132bb42c98a8
1416d0c1cb89
15c0c1acd8b
hex73158f395

30892684181 has 8 divisors (see below), whose sum is σ = 31118736000. Its totient is φ = 30667340880.

The previous prime is 30892684099. The next prime is 30892684241. The reversal of 30892684181 is 18148629803.

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

It is a cyclic number.

It is not a de Polignac number, because 30892684181 - 218 = 30892422037 is a prime.

It is a super-2 number, since 2×308926841812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30892684981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89450 + ... + 264171.

It is an arithmetic number, because the mean of its divisors is an integer number (3889842000).

Almost surely, 230892684181 is an apocalyptic number.

It is an amenable number.

30892684181 is a deficient number, since it is larger than the sum of its proper divisors (226051819).

30892684181 is a wasteful number, since it uses less digits than its factorization.

30892684181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354259.

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 30892684181 in words is "thirty billion, eight hundred ninety-two million, six hundred eighty-four thousand, one hundred eighty-one".

Divisors: 1 199 439 87361 353621 70370579 155239619 30892684181