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320199745 = 5122352363
BaseRepresentation
bin10011000101011…
…101110001000001
3211022111211110211
4103011131301001
51123432342440
651434554121
710635436645
oct2305356101
9738454424
10320199745
11154820898
128b298941
1351451108
1430750c25
151d19deea
hex1315dc41

320199745 has 8 divisors (see below), whose sum is σ = 384561216. Its totient is φ = 255945456.

The previous prime is 320199731. The next prime is 320199749. The reversal of 320199745 is 547991023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320199745 - 221 = 318102593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320199698 and 320199707.

It is not an unprimeable number, because it can be changed into a prime (320199749) 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, 20067 + ... + 32296.

It is an arithmetic number, because the mean of its divisors is an integer number (48070152).

Almost surely, 2320199745 is an apocalyptic number.

It is an amenable number.

320199745 is a deficient number, since it is larger than the sum of its proper divisors (64361471).

320199745 is a wasteful number, since it uses less digits than its factorization.

320199745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53591.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 320199745 is about 17894.1259915091. The cubic root of 320199745 is about 684.1326653801.

The spelling of 320199745 in words is "three hundred twenty million, one hundred ninety-nine thousand, seven hundred forty-five".

Divisors: 1 5 1223 6115 52363 261815 64039949 320199745