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30847051 = 197920551
BaseRepresentation
bin111010110101…
…1000001001011
32011001012012101
41311223001023
530344101201
63021054231
7523124044
oct165530113
964035171
1030847051
1116459934
12a3b7377
1365106c1
14414d8cb
152a94d01
hex1d6b04b

30847051 has 8 divisors (see below), whose sum is σ = 32883200. Its totient is φ = 28852200.

The previous prime is 30847031. The next prime is 30847093. The reversal of 30847051 is 15074803.

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 30847051 - 213 = 30838859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30847021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8775 + ... + 11776.

It is an arithmetic number, because the mean of its divisors is an integer number (4110400).

Almost surely, 230847051 is an apocalyptic number.

30847051 is a deficient number, since it is larger than the sum of its proper divisors (2036149).

30847051 is a wasteful number, since it uses less digits than its factorization.

30847051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20649.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30847051 is about 5554.0121533897. The cubic root of 30847051 is about 313.6205777216.

The spelling of 30847051 in words is "thirty million, eight hundred forty-seven thousand, fifty-one".

Divisors: 1 19 79 1501 20551 390469 1623529 30847051