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30746005 = 56739137
BaseRepresentation
bin111010101001…
…0010110010101
32010212001120221
41311102112111
530332333010
63014554341
7522223333
oct165222625
963761527
1030746005
111639aa24
12a3689b1
1364a6704
144124b53
152a74dda
hex1d52595

30746005 has 8 divisors (see below), whose sum is σ = 36954072. Its totient is φ = 24557568.

The previous prime is 30745999. The next prime is 30746033. The reversal of 30746005 is 50064703.

It can be written as a sum of positive squares in 4 ways, for example, as 352836 + 30393169 = 594^2 + 5513^2 .

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 30746005 - 23 = 30745997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1204 + ... + 7933.

It is an arithmetic number, because the mean of its divisors is an integer number (4619259).

Almost surely, 230746005 is an apocalyptic number.

It is an amenable number.

30746005 is a deficient number, since it is larger than the sum of its proper divisors (6208067).

30746005 is an equidigital number, since it uses as much as digits as its factorization.

30746005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9815.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 30746005 is about 5544.9080244852. The cubic root of 30746005 is about 313.2777597481.

The spelling of 30746005 in words is "thirty million, seven hundred forty-six thousand, five".

Divisors: 1 5 673 3365 9137 45685 6149201 30746005