381203424 has 144 divisors (see below), whose sum is σ = 1247212512. Its totient is φ = 108186624.

The previous prime is 381203419. The next prime is 381203447. The reversal of 381203424 is 424302183.

381203424 is a `hidden beast` number, since 38 + 1 + 203 + 424 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 348222 + ... + 349314.

It is an arithmetic number, because the mean of its divisors is an integer number (8661198).

Almost surely, 2^381203424 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 381203424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (623606256).

381203424 is an abundant number, since it is smaller than the sum of its proper divisors (866009088).

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

381203424 is a wasteful number, since it uses less digits than its factorization.

381203424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 381203424 is about 19524.4314641938. The cubic root of 381203424 is about 725.0794516177.

The spelling of 381203424 in words is "three hundred eighty-one million, two hundred three thousand, four hundred twenty-four".