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30648668 = 2219993833
BaseRepresentation
bin111010011101…
…0100101011100
32010200010001212
41310322211130
530321224133
63012523552
7521336501
oct164724534
963603055
1030648668
1116333886
12a3205b8
13647130b
1440db4a8
152a56148
hex1d3a95c

30648668 has 12 divisors (see below), whose sum is σ = 53676000. Its totient is φ = 15312672.

The previous prime is 30648661. The next prime is 30648697. The reversal of 30648668 is 86684603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30648661) 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, 6080 + ... + 9912.

It is an arithmetic number, because the mean of its divisors is an integer number (4473000).

Almost surely, 230648668 is an apocalyptic number.

It is an amenable number.

30648668 is a deficient number, since it is larger than the sum of its proper divisors (23027332).

30648668 is a wasteful number, since it uses less digits than its factorization.

30648668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5836 (or 5834 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 30648668 is about 5536.1239147982. The cubic root of 30648668 is about 312.9468142779.

The spelling of 30648668 in words is "thirty million, six hundred forty-eight thousand, six hundred sixty-eight".

Divisors: 1 2 4 1999 3833 3998 7666 7996 15332 7662167 15324334 30648668