381706368 has 32 divisors (see below), whose sum is σ = 1013908560. Its totient is φ = 127235328.

The previous prime is 381706363. The next prime is 381706453. The reversal of 381706368 is 863607183.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (381706363) 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, 496630 + ... + 497397.

Almost surely, 2^381706368 is an apocalyptic number.

It is an amenable number.

381706368 is an abundant number, since it is smaller than the sum of its proper divisors (632202192).

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

381706368 is an equidigital number, since it uses as much as digits as its factorization.

381706368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994044 (or 994032 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 381706368 is about 19537.3070815811. The cubic root of 381706368 is about 725.3981914081.

The spelling of 381706368 in words is "three hundred eighty-one million, seven hundred six thousand, three hundred sixty-eight".