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30727141 = 591513449
BaseRepresentation
bin111010100110…
…1101111100101
32010211002201021
41311031233211
530331232031
63014331141
7522114334
oct165155745
963732637
1030727141
1116387835
12a359ab1
13649ac53
14411bd1b
152a6e511
hex1d4dbe5

30727141 has 8 divisors (see below), whose sum is σ = 31464000. Its totient is φ = 29997600.

The previous prime is 30727139. The next prime is 30727159. The reversal of 30727141 is 14172703.

It is a happy number.

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 30727141 - 21 = 30727139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30727171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7185 + ... + 10633.

It is an arithmetic number, because the mean of its divisors is an integer number (3933000).

Almost surely, 230727141 is an apocalyptic number.

It is an amenable number.

30727141 is a deficient number, since it is larger than the sum of its proper divisors (736859).

30727141 is a wasteful number, since it uses less digits than its factorization.

30727141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 30727141 is about 5543.2067433932. The cubic root of 30727141 is about 313.2136768351.

Adding to 30727141 its reverse (14172703), we get a palindrome (44899844).

The spelling of 30727141 in words is "thirty million, seven hundred twenty-seven thousand, one hundred forty-one".

Divisors: 1 59 151 3449 8909 203491 520799 30727141