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30286089 = 331121707
BaseRepresentation
bin111001110001…
…0000100001001
32002222200201000
41303202010021
530223123324
63001045213
7515266431
oct163420411
962880630
1030286089
1116106429
12a186809
136375282
1440452c1
1529d39c9
hex1ce2109

30286089 has 8 divisors (see below), whose sum is σ = 44868320. Its totient is φ = 20190708.

The previous prime is 30286079. The next prime is 30286097. The reversal of 30286089 is 98068203.

It is not a de Polignac number, because 30286089 - 28 = 30285833 is a prime.

It is a super-3 number, since 3×302860893 (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30286049) 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, 560827 + ... + 560880.

It is an arithmetic number, because the mean of its divisors is an integer number (5608540).

Almost surely, 230286089 is an apocalyptic number.

It is an amenable number.

30286089 is a deficient number, since it is larger than the sum of its proper divisors (14582231).

30286089 is a wasteful number, since it uses less digits than its factorization.

30286089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121716 (or 1121710 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30286089 is about 5503.2798402407. The cubic root of 30286089 is about 311.7078441150.

The spelling of 30286089 in words is "thirty million, two hundred eighty-six thousand, eighty-nine".

Divisors: 1 3 9 27 1121707 3365121 10095363 30286089