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30289195 = 529208891
BaseRepresentation
bin111001110001…
…0110100101011
32002222211222001
41303202310223
530223223240
63001111431
7515311456
oct163426453
962884861
1030289195
11161087a2
12a188577
136376801
14404649d
1529d489a
hex1ce2d2b

30289195 has 8 divisors (see below), whose sum is σ = 37600560. Its totient is φ = 23395680.

The previous prime is 30289169. The next prime is 30289213. The reversal of 30289195 is 59198203.

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

It is a de Polignac number, because none of the positive numbers 2k-30289195 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104301 + ... + 104590.

It is an arithmetic number, because the mean of its divisors is an integer number (4700070).

Almost surely, 230289195 is an apocalyptic number.

30289195 is a deficient number, since it is larger than the sum of its proper divisors (7311365).

30289195 is a wasteful number, since it uses less digits than its factorization.

30289195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208925.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 30289195 is about 5503.5620283595. The cubic root of 30289195 is about 311.7184995182.

The spelling of 30289195 in words is "thirty million, two hundred eighty-nine thousand, one hundred ninety-five".

Divisors: 1 5 29 145 208891 1044455 6057839 30289195