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30343389 = 331833931
BaseRepresentation
bin111001111000…
…0000011011101
32010002121022020
41303300003131
530231442024
63002210353
7515625456
oct163600335
963077266
1030343389
111614548a
12a1b39b9
13639538b
14405c12d
1529e5979
hex1cf00dd

30343389 has 16 divisors (see below), whose sum is σ = 42276864. Its totient is φ = 19335600.

The previous prime is 30343363. The next prime is 30343409. The reversal of 30343389 is 98334303.

It is not a de Polignac number, because 30343389 - 29 = 30342877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30343289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5754 + ... + 9684.

It is an arithmetic number, because the mean of its divisors is an integer number (2642304).

Almost surely, 230343389 is an apocalyptic number.

It is an amenable number.

30343389 is a deficient number, since it is larger than the sum of its proper divisors (11933475).

30343389 is a wasteful number, since it uses less digits than its factorization.

30343389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 30343389 is about 5508.4833665901. The cubic root of 30343389 is about 311.9042996263.

The spelling of 30343389 in words is "thirty million, three hundred forty-three thousand, three hundred eighty-nine".

Divisors: 1 3 31 83 93 249 2573 3931 7719 11793 121861 326273 365583 978819 10114463 30343389