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380231779 = 11316720149
BaseRepresentation
bin10110101010011…
…110000001100011
3222111110202221111
4112222132001203
51234314404104
6101421404151
712264626314
oct2652360143
9874422844
10380231779
111856a3844
12a7409657
1360a0c825
14386da60b
15235ab404
hex16a9e063

380231779 has 8 divisors (see below), whose sum is σ = 385912800. Its totient is φ = 374591616.

The previous prime is 380231749. The next prime is 380231783. The reversal of 380231779 is 977132083.

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 380231779 - 225 = 346677347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380231729) 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, 8797 + ... + 28945.

It is an arithmetic number, because the mean of its divisors is an integer number (48239100).

Almost surely, 2380231779 is an apocalyptic number.

380231779 is a deficient number, since it is larger than the sum of its proper divisors (5681021).

380231779 is a wasteful number, since it uses less digits than its factorization.

380231779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20429.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 380231779 is about 19499.5327892747. The cubic root of 380231779 is about 724.4628785850.

The spelling of 380231779 in words is "three hundred eighty million, two hundred thirty-one thousand, seven hundred seventy-nine".

Divisors: 1 113 167 18871 20149 2276837 3364883 380231779