381758528 has 28 divisors (see below), whose sum is σ = 802116252. Its totient is φ = 179650560.

The previous prime is 381758501. The next prime is 381758539. The reversal of 381758528 is 825857183.

It can be written as a sum of positive squares in 2 ways, for example, as 345662464 + 36096064 = 18592^2 + 6008^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174353 + ... + 176528.

It is an arithmetic number, because the mean of its divisors is an integer number (28647009).

Almost surely, 2^381758528 is an apocalyptic number.

It is an amenable number.

381758528 is an abundant number, since it is smaller than the sum of its proper divisors (420357724).

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

381758528 is a wasteful number, since it uses less digits than its factorization.

381758528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350910 (or 350900 counting only the distinct ones).

The product of its digits is 537600, while the sum is 47.

The square root of 381758528 is about 19538.6419180044. The cubic root of 381758528 is about 725.4312316798.

The spelling of 381758528 in words is "three hundred eighty-one million, seven hundred fifty-eight thousand, five hundred twenty-eight".