381282447 has 32 divisors (see below), whose sum is σ = 642621952. Its totient is φ = 195675264.

The previous prime is 381282427. The next prime is 381282491. The reversal of 381282447 is 744282183.

It is not a de Polignac number, because 381282447 - 2¹⁶ = 381216911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381282427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8773 + ... + 28974.

It is an arithmetic number, because the mean of its divisors is an integer number (20081936).

Almost surely, 2^381282447 is an apocalyptic number.

381282447 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

381282447 is a deficient number, since it is larger than the sum of its proper divisors (261339505).

381282447 is a wasteful number, since it uses less digits than its factorization.

381282447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37807.

The product of its digits is 86016, while the sum is 39.

The square root of 381282447 is about 19526.4550546176. The cubic root of 381282447 is about 725.1295508483.

The spelling of 381282447 in words is "three hundred eighty-one million, two hundred eighty-two thousand, four hundred forty-seven".