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30676660 = 2257219119
BaseRepresentation
bin111010100000…
…1011010110100
32010201112110121
41311001122310
530323123120
63013301324
7521514220
oct165013264
963645417
1030676660
1116352913
12a334844
136480c91
144107780
152a5e5aa
hex1d416b4

30676660 has 24 divisors (see below), whose sum is σ = 73624320. Its totient is φ = 10517664.

The previous prime is 30676631. The next prime is 30676661. The reversal of 30676660 is 6667603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30676661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109420 + ... + 109699.

It is an arithmetic number, because the mean of its divisors is an integer number (3067680).

Almost surely, 230676660 is an apocalyptic number.

It is an amenable number.

30676660 is an abundant number, since it is smaller than the sum of its proper divisors (42947660).

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

30676660 is a wasteful number, since it uses less digits than its factorization.

30676660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219135 (or 219133 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 30676660 is about 5538.6514604189. The cubic root of 30676660 is about 313.0420586747.

The spelling of 30676660 in words is "thirty million, six hundred seventy-six thousand, six hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 219119 438238 876476 1095595 1533833 2191190 3067666 4382380 6135332 7669165 15338330 30676660