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30395078 = 272171077
BaseRepresentation
bin111001111110…
…0101011000110
32010012020012122
41303330223012
530240120303
63003245542
7516232250
oct163745306
963166178
1030395078
11161802aa
12a2198b2
1363b2a6c
144072cd0
152a05e38
hex1cfcac6

30395078 has 8 divisors (see below), whose sum is σ = 52105872. Its totient is φ = 13026456.

The previous prime is 30395077. The next prime is 30395107. The reversal of 30395078 is 87059303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30395077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085525 + ... + 1085552.

It is an arithmetic number, because the mean of its divisors is an integer number (6513234).

Almost surely, 230395078 is an apocalyptic number.

30395078 is a deficient number, since it is larger than the sum of its proper divisors (21710794).

30395078 is a wasteful number, since it uses less digits than its factorization.

30395078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171086.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 30395078 is about 5513.1731335049. The cubic root of 30395078 is about 312.0813055143.

The spelling of 30395078 in words is "thirty million, three hundred ninety-five thousand, seventy-eight".

Divisors: 1 2 7 14 2171077 4342154 15197539 30395078