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30042590833 = 139216133747
BaseRepresentation
bin11011111110101011…
…011000111001110001
32212112201102202000101
4123332223120321301
5443011400401313
621445032552401
72112324544243
oct337653307161
985481382011
1030042590833
1111817294172
1259a5252701
132aaa157c88
14164dd74093
15bac73d5dd
hex6fead8e71

30042590833 has 4 divisors (see below), whose sum is σ = 30258724720. Its totient is φ = 29826456948.

The previous prime is 30042590827. The next prime is 30042590843. The reversal of 30042590833 is 33809524003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30042590833 - 29 = 30042590321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30042590792 and 30042590801.

It is not an unprimeable number, because it can be changed into a prime (30042590843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108066735 + ... + 108067012.

It is an arithmetic number, because the mean of its divisors is an integer number (7564681180).

Almost surely, 230042590833 is an apocalyptic number.

It is an amenable number.

30042590833 is a deficient number, since it is larger than the sum of its proper divisors (216133887).

30042590833 is a wasteful number, since it uses less digits than its factorization.

30042590833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216133886.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 30042590833 in words is "thirty billion, forty-two million, five hundred ninety thousand, eight hundred thirty-three".

Divisors: 1 139 216133747 30042590833