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12347930 = 257419421
BaseRepresentation
bin101111000110…
…101000011010
3212020100011202
4233012220122
511130113210
61120354202
7206645540
oct57065032
925210152
1012347930
116a74201
124175962
13273448a
1418d5d90
15113d9a5
hexbc6a1a

12347930 has 32 divisors (see below), whose sum is σ = 25522560. Its totient is φ = 4213440.

The previous prime is 12347911. The next prime is 12347953. The reversal of 12347930 is 3974321.

12347930 = T1 + T2 + ... + T419.

12347930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

12347930 is a nontrivial binomial coefficient, being equal to C(421, 3).

It is a junction number, because it is equal to n+sod(n) for n = 12347893 and 12347902.

It is an unprimeable number.

It is the 419-th tetrahedral number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29120 + ... + 29540.

It is an arithmetic number, because the mean of its divisors is an integer number (797580).

Almost surely, 212347930 is an apocalyptic number.

12347930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12347930 is an abundant number, since it is smaller than the sum of its proper divisors (13174630).

12347930 is a wasteful number, since it uses less digits than its factorization.

12347930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 12347930 is about 3513.9621511906. The cubic root of 12347930 is about 231.1344706589.

The spelling of 12347930 in words is "twelve million, three hundred forty-seven thousand, nine hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 419 421 838 842 2095 2105 2933 2947 4190 4210 5866 5894 14665 14735 29330 29470 176399 352798 881995 1234793 1763990 2469586 6173965 12347930