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30055345 = 533717837
BaseRepresentation
bin111001010100…
…1101110110001
32002112222011221
41302221232301
530143232340
62552105041
7513315625
oct162515661
962488157
1030055345
1115a69031
12a095181
1362c4238
143dc5185
15298a44a
hex1ca9bb1

30055345 has 8 divisors (see below), whose sum is σ = 36175464. Its totient is φ = 23971584.

The previous prime is 30055343. The next prime is 30055349. The reversal of 30055345 is 54355003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4532641 + 25522704 = 2129^2 + 5052^2 .

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 30055345 - 21 = 30055343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30055343) 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, 7234 + ... + 10603.

It is an arithmetic number, because the mean of its divisors is an integer number (4521933).

Almost surely, 230055345 is an apocalyptic number.

It is an amenable number.

30055345 is a deficient number, since it is larger than the sum of its proper divisors (6120119).

30055345 is a wasteful number, since it uses less digits than its factorization.

30055345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18179.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 30055345 is about 5482.2755312005. The cubic root of 30055345 is about 310.9142107503.

The spelling of 30055345 in words is "thirty million, fifty-five thousand, three hundred forty-five".

Divisors: 1 5 337 1685 17837 89185 6011069 30055345