381733680 has 80 divisors (see below), whose sum is σ = 1185325920. Its totient is φ = 101627904.

The previous prime is 381733673. The next prime is 381733687. The reversal of 381733680 is 86337183.

It is an interprime number because it is at equal distance from previous prime (381733673) and next prime (381733687).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (381733687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227886 + ... + 229554.

It is an arithmetic number, because the mean of its divisors is an integer number (14816574).

Almost surely, 2^381733680 is an apocalyptic number.

381733680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381733680 is an abundant number, since it is smaller than the sum of its proper divisors (803592240).

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

381733680 is a wasteful number, since it uses less digits than its factorization.

381733680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638 (or 2632 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 381733680 is about 19538.0060395118. The cubic root of 381733680 is about 725.4154923184.

The spelling of 381733680 in words is "three hundred eighty-one million, seven hundred thirty-three thousand, six hundred eighty".