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30230830 = 257431869
BaseRepresentation
bin111001101010…
…0100100101110
32002212212220101
41303110210232
530214341310
62555541314
7514646350
oct163244456
962785811
1030230830
1116078963
12a15a83a
136356086
14402d0d0
1529c243a
hex1cd492e

30230830 has 16 divisors (see below), whose sum is σ = 62189280. Its totient is φ = 10364832.

The previous prime is 30230819. The next prime is 30230839. The reversal of 30230830 is 3803203.

It is a junction number, because it is equal to n+sod(n) for n = 30230798 and 30230807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30230839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215865 + ... + 216004.

It is an arithmetic number, because the mean of its divisors is an integer number (3886830).

Almost surely, 230230830 is an apocalyptic number.

30230830 is an abundant number, since it is smaller than the sum of its proper divisors (31958450).

30230830 is a wasteful number, since it uses less digits than its factorization.

30230830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431883.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 30230830 is about 5498.2569965399. The cubic root of 30230830 is about 311.5181514122.

It can be divided in two parts, 30 and 230830, that added together give a triangular number (230860 = T679).

The spelling of 30230830 in words is "thirty million, two hundred thirty thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 431869 863738 2159345 3023083 4318690 6046166 15115415 30230830