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30359139 = 318475479
BaseRepresentation
bin111001111001…
…1111001100011
32010010101220120
41303303321203
530232443024
63002411323
7516022416
oct163637143
963111816
1030359139
11161562a8
12a200b43
13639c5b5
144063b7d
1529ea479
hex1cf3e63

30359139 has 8 divisors (see below), whose sum is σ = 40508160. Its totient is φ = 20224776.

The previous prime is 30359111. The next prime is 30359171. The reversal of 30359139 is 93195303.

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

It is not a de Polignac number, because 30359139 - 212 = 30355043 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (30359179) 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, 2802 + ... + 8280.

It is an arithmetic number, because the mean of its divisors is an integer number (5063520).

Almost surely, 230359139 is an apocalyptic number.

30359139 is a deficient number, since it is larger than the sum of its proper divisors (10149021).

30359139 is a wasteful number, since it uses less digits than its factorization.

30359139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329.

The product of its (nonzero) digits is 10935, while the sum is 33.

The square root of 30359139 is about 5509.9127942282. The cubic root of 30359139 is about 311.9582558385.

The spelling of 30359139 in words is "thirty million, three hundred fifty-nine thousand, one hundred thirty-nine".

Divisors: 1 3 1847 5479 5541 16437 10119713 30359139