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30376081 = 33719011
BaseRepresentation
bin111001111100…
…0000010010001
32010011021011001
41303320002101
530234013311
63003022001
7516123001
oct163700221
963137131
1030376081
1116167aaa
12a20a901
1363a7218
14406a001
152a004c1
hex1cf8091

30376081 has 4 divisors (see below), whose sum is σ = 30388464. Its totient is φ = 30363700.

The previous prime is 30376057. The next prime is 30376133. The reversal of 30376081 is 18067303.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18067303 = 88720369.

It is a cyclic number.

It is not a de Polignac number, because 30376081 - 27 = 30375953 is a prime.

It is a super-2 number, since 2×303760812 = 1845412593837122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30376981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (7597116).

Almost surely, 230376081 is an apocalyptic number.

It is an amenable number.

30376081 is a deficient number, since it is larger than the sum of its proper divisors (12383).

30376081 is an equidigital number, since it uses as much as digits as its factorization.

30376081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12382.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 30376081 is about 5511.4499907012. The cubic root of 30376081 is about 312.0162747647.

The spelling of 30376081 in words is "thirty million, three hundred seventy-six thousand, eighty-one".

Divisors: 1 3371 9011 30376081