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380712209 = 3120635953
BaseRepresentation
bin10110101100010…
…011010100010001
3222112101011222012
4112230103110101
51234430242314
6101435552305
712302000063
oct2654232421
9875334865
10380712209
111859a1799
12a75bb695
1360b4a3c7
14387c3733
152365393e
hex16b13511

380712209 has 8 divisors (see below), whose sum is σ = 393249792. Its totient is φ = 368190720.

The previous prime is 380712151. The next prime is 380712217. The reversal of 380712209 is 902217083.

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

It is not a de Polignac number, because 380712209 - 220 = 379663633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380712289) 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, 60977 + ... + 66929.

It is an arithmetic number, because the mean of its divisors is an integer number (49156224).

Almost surely, 2380712209 is an apocalyptic number.

It is an amenable number.

380712209 is a deficient number, since it is larger than the sum of its proper divisors (12537583).

380712209 is a wasteful number, since it uses less digits than its factorization.

380712209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8047.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 380712209 is about 19511.8479135114. The cubic root of 380712209 is about 724.7678743201.

The spelling of 380712209 in words is "three hundred eighty million, seven hundred twelve thousand, two hundred nine".

Divisors: 1 31 2063 5953 63953 184543 12281039 380712209