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30139327 = 251120077
BaseRepresentation
bin111001011111…
…0001110111111
32002201020101101
41302332032333
530203424302
62553553531
7514115521
oct162761677
962636341
1030139327
1116016139
12a1158a7
13632352a
144007a11
1529a5287
hex1cbe3bf

30139327 has 4 divisors (see below), whose sum is σ = 30259656. Its totient is φ = 30019000.

The previous prime is 30139313. The next prime is 30139337. The reversal of 30139327 is 72393103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30139327 - 27 = 30139199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30139295 and 30139304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30139337) 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, 59788 + ... + 60289.

It is an arithmetic number, because the mean of its divisors is an integer number (7564914).

Almost surely, 230139327 is an apocalyptic number.

30139327 is a deficient number, since it is larger than the sum of its proper divisors (120329).

30139327 is a wasteful number, since it uses less digits than its factorization.

30139327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120328.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 30139327 is about 5489.9295988200. The cubic root of 30139327 is about 311.2035316079.

The spelling of 30139327 in words is "thirty million, one hundred thirty-nine thousand, three hundred twenty-seven".

Divisors: 1 251 120077 30139327