381038927528 has 128 divisors (see below), whose sum is σ = 846533099520. Its totient is φ = 157410086400.

The previous prime is 381038927453. The next prime is 381038927557. The reversal of 381038927528 is 825729830183.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 221147675 + ... + 221149397.

It is an arithmetic number, because the mean of its divisors is an integer number (6613539840).

Almost surely, 2^381038927528 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 381038927528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423266549760).

381038927528 is an abundant number, since it is smaller than the sum of its proper divisors (465494171992).

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

381038927528 is a wasteful number, since it uses less digits than its factorization.

381038927528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007 (or 3003 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 381038927528 in words is "three hundred eighty-one billion, thirty-eight million, nine hundred twenty-seven thousand, five hundred twenty-eight".