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120306430 = 2555721599
BaseRepresentation
bin1110010101110…
…11101011111110
322101101012101201
413022323223332
5221244301210
615534330114
72660405416
oct712735376
9271335351
10120306430
1161a01002
123435993a
131bc0354a
1411d99646
15a86653a
hex72bbafe

120306430 has 16 divisors (see below), whose sum is σ = 216950400. Its totient is φ = 48033952.

The previous prime is 120306427. The next prime is 120306469. The reversal of 120306430 is 34603021.

It is a junction number, because it is equal to n+sod(n) for n = 120306398 and 120306407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5230 + ... + 16369.

It is an arithmetic number, because the mean of its divisors is an integer number (13559400).

Almost surely, 2120306430 is an apocalyptic number.

120306430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120306430 is a deficient number, since it is larger than the sum of its proper divisors (96643970).

120306430 is a wasteful number, since it uses less digits than its factorization.

120306430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22163.

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

The square root of 120306430 is about 10968.4287844705. The cubic root of 120306430 is about 493.6619032056.

Adding to 120306430 its reverse (34603021), we get a palindrome (154909451).

The spelling of 120306430 in words is "one hundred twenty million, three hundred six thousand, four hundred thirty".

Divisors: 1 2 5 10 557 1114 2785 5570 21599 43198 107995 215990 12030643 24061286 60153215 120306430