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30668384 = 252341669
BaseRepresentation
bin111010011111…
…1011001100000
32010201010010002
41310333121200
530322342014
63013155132
7521451125
oct164773140
963633102
1030668384
111634767a
12a32baa8
13647a296
14410474c
152a5bdde
hex1d3f660

30668384 has 24 divisors (see below), whose sum is σ = 63005040. Its totient is φ = 14667136.

The previous prime is 30668359. The next prime is 30668387. The reversal of 30668384 is 48386603.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20099 + ... + 21570.

It is an arithmetic number, because the mean of its divisors is an integer number (2625210).

Almost surely, 230668384 is an apocalyptic number.

It is an amenable number.

30668384 is an abundant number, since it is smaller than the sum of its proper divisors (32336656).

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

30668384 is a wasteful number, since it uses less digits than its factorization.

30668384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41702 (or 41694 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 30668384 is about 5537.9042967534. The cubic root of 30668384 is about 313.0139051416.

The spelling of 30668384 in words is "thirty million, six hundred sixty-eight thousand, three hundred eighty-four".

Divisors: 1 2 4 8 16 23 32 46 92 184 368 736 41669 83338 166676 333352 666704 958387 1333408 1916774 3833548 7667096 15334192 30668384