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30012668 = 2276431667
BaseRepresentation
bin111001001111…
…1010011111100
32002110210122022
41302133103330
530140401133
62551135312
7513050330
oct162372374
962423568
1030012668
1115a39a64
12a074538
1362aa99a
143db37c0
15297c998
hex1c9f4fc

30012668 has 24 divisors (see below), whose sum is σ = 60154752. Its totient is φ = 12834864.

The previous prime is 30012659. The next prime is 30012683. The reversal of 30012668 is 86621003.

It is a congruent number.

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, 17171 + ... + 18837.

It is an arithmetic number, because the mean of its divisors is an integer number (2506448).

Almost surely, 230012668 is an apocalyptic number.

It is an amenable number.

30012668 is an abundant number, since it is smaller than the sum of its proper divisors (30142084).

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

30012668 is a wasteful number, since it uses less digits than its factorization.

30012668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 30012668 is about 5478.3818778906. The cubic root of 30012668 is about 310.7669804645.

The spelling of 30012668 in words is "thirty million, twelve thousand, six hundred sixty-eight".

Divisors: 1 2 4 7 14 28 643 1286 1667 2572 3334 4501 6668 9002 11669 18004 23338 46676 1071881 2143762 4287524 7503167 15006334 30012668