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30668382 = 234189311
BaseRepresentation
bin111010011111…
…1011001011110
32010201010010000
41310333121132
530322342012
63013155130
7521451123
oct164773136
963633100
1030668382
1116347678
12a32baa6
13647a294
14410474a
152a5bddc
hex1d3f65e

30668382 has 20 divisors (see below), whose sum is σ = 68720256. Its totient is φ = 10222740.

The previous prime is 30668359. The next prime is 30668387. The reversal of 30668382 is 28386603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30668387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 94494 + ... + 94817.

Almost surely, 230668382 is an apocalyptic number.

30668382 is an abundant number, since it is smaller than the sum of its proper divisors (38051874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30668382 is a wasteful number, since it uses less digits than its factorization.

30668382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189325 (or 189316 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 30668382 is about 5537.9041161797. The cubic root of 30668382 is about 313.0138983373.

The spelling of 30668382 in words is "thirty million, six hundred sixty-eight thousand, three hundred eighty-two".

Divisors: 1 2 3 6 9 18 27 54 81 162 189311 378622 567933 1135866 1703799 3407598 5111397 10222794 15334191 30668382