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380109271 = 656357917
BaseRepresentation
bin10110101010000…
…000000111010111
3222111020112220011
4112222000013113
51234301444041
6101415021051
712263606203
oct2652000727
9874215804
10380109271
1118561a7a3
12a736a787
1360998b39
14386a7b03
1523584e81
hex16a801d7

380109271 has 4 divisors (see below), whose sum is σ = 380173752. Its totient is φ = 380044792.

The previous prime is 380109263. The next prime is 380109283. The reversal of 380109271 is 172901083.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 380109271 - 23 = 380109263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380109571) 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 3 ways as a sum of consecutive naturals, for example, 22396 + ... + 35521.

It is an arithmetic number, because the mean of its divisors is an integer number (95043438).

Almost surely, 2380109271 is an apocalyptic number.

380109271 is a deficient number, since it is larger than the sum of its proper divisors (64481).

380109271 is an equidigital number, since it uses as much as digits as its factorization.

380109271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64480.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 380109271 is about 19496.3912301739. The cubic root of 380109271 is about 724.3850646158.

The spelling of 380109271 in words is "three hundred eighty million, one hundred nine thousand, two hundred seventy-one".

Divisors: 1 6563 57917 380109271