381243792 has 20 divisors (see below), whose sum is σ = 984879920. Its totient is φ = 127081248.

The previous prime is 381243769. The next prime is 381243803. The reversal of 381243792 is 297342183.

It is a self number, because there is not a number n which added to its sum of digits gives 381243792.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3971242 + ... + 3971337.

It is an arithmetic number, because the mean of its divisors is an integer number (49243996).

Almost surely, 2^381243792 is an apocalyptic number.

It is an amenable number.

381243792 is an abundant number, since it is smaller than the sum of its proper divisors (603636128).

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

381243792 is a wasteful number, since it uses less digits than its factorization.

381243792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7942590 (or 7942584 counting only the distinct ones).

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

The square root of 381243792 is about 19525.4652185294. The cubic root of 381243792 is about 725.1050451043.

The spelling of 381243792 in words is "three hundred eighty-one million, two hundred forty-three thousand, seven hundred ninety-two".