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1230030320 = 24515375379
BaseRepresentation
bin100100101010000…
…1100010111110000
310011201112000101112
41021110030113300
510004341432240
6322015452452
742324041141
oct11124142760
93151460345
101230030320
11581357a92
122a3b27128
13167aaa1bc
14b9509ac8
1572ebd665
hex4950c5f0

1230030320 has 20 divisors (see below), whose sum is σ = 2859820680. Its totient is φ = 492012096.

The previous prime is 1230030301. The next prime is 1230030337. The reversal of 1230030320 is 230300321.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1230030295 and 1230030304.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7687610 + ... + 7687769.

It is an arithmetic number, because the mean of its divisors is an integer number (142991034).

Almost surely, 21230030320 is an apocalyptic number.

1230030320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230030320 is an abundant number, since it is smaller than the sum of its proper divisors (1629790360).

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

1230030320 is a wasteful number, since it uses less digits than its factorization.

1230030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15375392 (or 15375386 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 1230030320 is about 35071.7880924255. The cubic root of 1230030320 is about 1071.4500734394.

Adding to 1230030320 its reverse (230300321), we get a palindrome (1460330641).

The spelling of 1230030320 in words is "one billion, two hundred thirty million, thirty thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 15375379 30750758 61501516 76876895 123003032 153753790 246006064 307507580 615015160 1230030320