381247832 has 48 divisors (see below), whose sum is σ = 849281760. Its totient is φ = 159907776.

The previous prime is 381247819. The next prime is 381247837. The reversal of 381247832 is 238742183.

381247832 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381247837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8078 + ... + 28770.

It is an arithmetic number, because the mean of its divisors is an integer number (17693370).

Almost surely, 2^381247832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381247832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424640880).

381247832 is an abundant number, since it is smaller than the sum of its proper divisors (468033928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381247832 is a wasteful number, since it uses less digits than its factorization.

381247832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20760 (or 20749 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 381247832 is about 19525.5686728966. The cubic root of 381247832 is about 725.1076063823.

The spelling of 381247832 in words is "three hundred eighty-one million, two hundred forty-seven thousand, eight hundred thirty-two".