381244752 has 160 divisors (see below), whose sum is σ = 1261030400. Its totient is φ = 108024192.

The previous prime is 381244723. The next prime is 381244793. The reversal of 381244752 is 257442183.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419883 + ... + 420789.

It is an arithmetic number, because the mean of its divisors is an integer number (7881440).

Almost surely, 2^381244752 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 381244752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630515200).

381244752 is an abundant number, since it is smaller than the sum of its proper divisors (879785648).

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

381244752 is a wasteful number, since it uses less digits than its factorization.

381244752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1058 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 381244752 is about 19525.4898017950. The cubic root of 381244752 is about 725.1056537265.

The spelling of 381244752 in words is "three hundred eighty-one million, two hundred forty-four thousand, seven hundred fifty-two".