381508704 has 120 divisors (see below), whose sum is σ = 1133692560. Its totient is φ = 125846784.

The previous prime is 381508703. The next prime is 381508711. The reversal of 381508704 is 407805183.

381508704 is a `hidden beast` number, since 3 + 81 + 508 + 70 + 4 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381508703) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 266262 + ... + 267690.

It is an arithmetic number, because the mean of its divisors is an integer number (9447438).

Almost surely, 2^381508704 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 381508704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566846280).

381508704 is an abundant number, since it is smaller than the sum of its proper divisors (752183856).

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

381508704 is a wasteful number, since it uses less digits than its factorization.

381508704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 381508704 is about 19532.2477969127. The cubic root of 381508704 is about 725.2729556444.

The spelling of 381508704 in words is "three hundred eighty-one million, five hundred eight thousand, seven hundred four".