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380907085 = 5135860109
BaseRepresentation
bin10110101101000…
…010111001001101
3222112202002021211
4112231002321031
51240003011320
6101444054421
712303441166
oct2655027115
9875662254
10380907085
11186015149
12a7694411
1360bb8010
143883476d
152369155a
hex16b42e4d

380907085 has 8 divisors (see below), whose sum is σ = 492249240. Its totient is φ = 281285184.

The previous prime is 380907073. The next prime is 380907089. The reversal of 380907085 is 580709083.

It can be written as a sum of positive squares in 4 ways, for example, as 110889 + 380796196 = 333^2 + 19514^2 .

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 380907085 - 27 = 380906957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380907089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2929990 + ... + 2930119.

It is an arithmetic number, because the mean of its divisors is an integer number (61531155).

Almost surely, 2380907085 is an apocalyptic number.

It is an amenable number.

380907085 is a deficient number, since it is larger than the sum of its proper divisors (111342155).

380907085 is a wasteful number, since it uses less digits than its factorization.

380907085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860127.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 380907085 is about 19516.8410609914. The cubic root of 380907085 is about 724.8915160708.

The spelling of 380907085 in words is "three hundred eighty million, nine hundred seven thousand, eighty-five".

Divisors: 1 5 13 65 5860109 29300545 76181417 380907085