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30072607 = 181166147
BaseRepresentation
bin111001010110…
…1111100011111
32002120211212021
41302231330133
530144310412
62552321011
7513420145
oct162557437
962524767
1030072607
1115a7aaa4
12a0a3167
1362cc056
143dcb595
152990607
hex1cadf1f

30072607 has 4 divisors (see below), whose sum is σ = 30238936. Its totient is φ = 29906280.

The previous prime is 30072589. The next prime is 30072613. The reversal of 30072607 is 70627003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70627003 = 71299907.

It is a cyclic number.

It is not a de Polignac number, because 30072607 - 27 = 30072479 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 (30072617) 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 3 ways as a sum of consecutive naturals, for example, 82893 + ... + 83254.

It is an arithmetic number, because the mean of its divisors is an integer number (7559734).

Almost surely, 230072607 is an apocalyptic number.

30072607 is a deficient number, since it is larger than the sum of its proper divisors (166329).

30072607 is a wasteful number, since it uses less digits than its factorization.

30072607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166328.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 30072607 is about 5483.8496514766. The cubic root of 30072607 is about 310.9737228930.

The spelling of 30072607 in words is "thirty million, seventy-two thousand, six hundred seven".

Divisors: 1 181 166147 30072607