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30068015 = 523475563
BaseRepresentation
bin111001010110…
…0110100101111
32002120121120012
41302230310233
530144134030
62552243435
7513400565
oct162546457
962517505
1030068015
1115a775aa
12a0a057b
1362c9c33
143dc9a35
15298e095
hex1cacd2f

30068015 has 16 divisors (see below), whose sum is σ = 38458368. Its totient is φ = 22514976.

The previous prime is 30068009. The next prime is 30068023. The reversal of 30068015 is 51086003.

It is not a de Polignac number, because 30068015 - 220 = 29019439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2624 + ... + 8186.

It is an arithmetic number, because the mean of its divisors is an integer number (2403648).

Almost surely, 230068015 is an apocalyptic number.

30068015 is a deficient number, since it is larger than the sum of its proper divisors (8390353).

30068015 is a wasteful number, since it uses less digits than its factorization.

30068015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 30068015 is about 5483.4309515120. The cubic root of 30068015 is about 310.9578938250.

The spelling of 30068015 in words is "thirty million, sixty-eight thousand, fifteen".

Divisors: 1 5 23 47 115 235 1081 5405 5563 27815 127949 261461 639745 1307305 6013603 30068015