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30680027 = 724314561
BaseRepresentation
bin111010100001…
…0001111011011
32010201201002022
41311002033123
530323230102
63013325055
7521530100
oct165021733
963651068
1030680027
11163553a4
12a33678b
136482681
144108aa7
152a605a2
hex1d423db

30680027 has 12 divisors (see below), whose sum is σ = 36521496. Its totient is φ = 25683840.

The previous prime is 30680021. The next prime is 30680047. The reversal of 30680027 is 72008603.

It is a de Polignac number, because none of the positive numbers 2k-30680027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30679978 and 30680005.

It is not an unprimeable number, because it can be changed into a prime (30680021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5174 + ... + 9387.

It is an arithmetic number, because the mean of its divisors is an integer number (3043458).

Almost surely, 230680027 is an apocalyptic number.

30680027 is a deficient number, since it is larger than the sum of its proper divisors (5841469).

30680027 is a wasteful number, since it uses less digits than its factorization.

30680027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14618 (or 14611 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 30680027 is about 5538.9554069337. The cubic root of 30680027 is about 313.0535111823.

The spelling of 30680027 in words is "thirty million, six hundred eighty thousand, twenty-seven".

Divisors: 1 7 43 49 301 2107 14561 101927 626123 713489 4382861 30680027