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30392071 = 67479947
BaseRepresentation
bin111001111101…
…1111100000111
32010012002002021
41303323330013
530240021241
63003224011
7516220423
oct163737407
963162067
1030392071
1116179016
12a218007
1363b1598
144071b83
152a050d1
hex1cfbf07

30392071 has 8 divisors (see below), whose sum is σ = 30942720. Its totient is φ = 29844408.

The previous prime is 30392069. The next prime is 30392081. The reversal of 30392071 is 17029303.

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 30392071 - 21 = 30392069 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 (30392051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31620 + ... + 32566.

It is an arithmetic number, because the mean of its divisors is an integer number (3867840).

Almost surely, 230392071 is an apocalyptic number.

30392071 is a deficient number, since it is larger than the sum of its proper divisors (550649).

30392071 is an equidigital number, since it uses as much as digits as its factorization.

30392071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 30392071 is about 5512.9004162963. The cubic root of 30392071 is about 312.0710137226.

The spelling of 30392071 in words is "thirty million, three hundred ninety-two thousand, seventy-one".

Divisors: 1 67 479 947 32093 63449 453613 30392071