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380225819 = 3112265349
BaseRepresentation
bin10110101010011…
…100100100011011
3222111110110202202
4112222130210123
51234314211234
6101421320415
712264603041
oct2652344433
9874413682
10380225819
1118569a316
12a740610b
1360a09bbc
14386d8391
15235a977e
hex16a9c91b

380225819 has 4 divisors (see below), whose sum is σ = 392491200. Its totient is φ = 367960440.

The previous prime is 380225809. The next prime is 380225837. The reversal of 380225819 is 918522083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918522083 = 3187288209.

It is a cyclic number.

It is not a de Polignac number, because 380225819 - 216 = 380160283 is a prime.

It is a super-2 number, since 2×3802258192 = 289143346868441522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380225809) 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, 6132644 + ... + 6132705.

It is an arithmetic number, because the mean of its divisors is an integer number (98122800).

Almost surely, 2380225819 is an apocalyptic number.

380225819 is a deficient number, since it is larger than the sum of its proper divisors (12265381).

380225819 is a wasteful number, since it uses less digits than its factorization.

380225819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12265380.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 380225819 is about 19499.3799645014. The cubic root of 380225819 is about 724.4590933312.

The spelling of 380225819 in words is "three hundred eighty million, two hundred twenty-five thousand, eight hundred nineteen".

Divisors: 1 31 12265349 380225819