381127506 has 8 divisors (see below), whose sum is σ = 762255024. Its totient is φ = 127042500.

The previous prime is 381127469. The next prime is 381127507. The reversal of 381127506 is 605721183.

It is a sphenic number, since it is the product of 3 distinct primes.

381127506 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (381127507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31760620 + ... + 31760631.

It is an arithmetic number, because the mean of its divisors is an integer number (95281878).

Almost surely, 2^381127506 is an apocalyptic number.

381127506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

381127506 is a wasteful number, since it uses less digits than its factorization.

381127506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63521256.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 381127506 is about 19522.4871878560. The cubic root of 381127506 is about 725.0313143827.

Adding to 381127506 its reverse (605721183), we get a palindrome (986848689).

The spelling of 381127506 in words is "three hundred eighty-one million, one hundred twenty-seven thousand, five hundred six".