381333736 has 16 divisors (see below), whose sum is σ = 817143840. Its totient is φ = 163428720.

The previous prime is 381333713. The next prime is 381333737. The reversal of 381333736 is 637333183.

It is a junction number, because it is equal to n+sod(n) for n = 381333695 and 381333704.

It is not an unprimeable number, because it can be changed into a prime (381333737) 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, 3404710 + ... + 3404821.

It is an arithmetic number, because the mean of its divisors is an integer number (51071490).

Almost surely, 2^381333736 is an apocalyptic number.

It is an amenable number.

381333736 is an abundant number, since it is smaller than the sum of its proper divisors (435810104).

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

381333736 is a wasteful number, since it uses less digits than its factorization.

381333736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809544 (or 6809540 counting only the distinct ones).

The product of its digits is 81648, while the sum is 37.

The square root of 381333736 is about 19527.7683312764. The cubic root of 381333736 is about 725.1620634929.

The spelling of 381333736 in words is "three hundred eighty-one million, three hundred thirty-three thousand, seven hundred thirty-six".