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380144447 = 3131214519
BaseRepresentation
bin10110101010001…
…000101100111111
3222111022100010222
4112222020230333
51234304110242
6101415451555
712264113564
oct2652105477
9874270128
10380144447
11185644171
12a7386bbb
13609abb57
14386b686b
15235905d2
hex16a88b3f

380144447 has 4 divisors (see below), whose sum is σ = 381359280. Its totient is φ = 378929616.

The previous prime is 380144431. The next prime is 380144473. The reversal of 380144447 is 744441083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744441083 = 5571336519.

It is a cyclic number.

It is not a de Polignac number, because 380144447 - 24 = 380144431 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 (380144407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606947 + ... + 607572.

It is an arithmetic number, because the mean of its divisors is an integer number (95339820).

Almost surely, 2380144447 is an apocalyptic number.

380144447 is a deficient number, since it is larger than the sum of its proper divisors (1214833).

380144447 is a wasteful number, since it uses less digits than its factorization.

380144447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214832.

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 380144447 is about 19497.2933249721. The cubic root of 380144447 is about 724.4074092282.

The spelling of 380144447 in words is "three hundred eighty million, one hundred forty-four thousand, four hundred forty-seven".

Divisors: 1 313 1214519 380144447