381233240 has 32 divisors (see below), whose sum is σ = 873964080. Its totient is φ = 149615232.

The previous prime is 381233239. The next prime is 381233249. The reversal of 381233240 is 42332183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381233249) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 87794 + ... + 92033.

Almost surely, 2^381233240 is an apocalyptic number.

It is an amenable number.

381233240 is an abundant number, since it is smaller than the sum of its proper divisors (492730840).

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

381233240 is a wasteful number, since it uses less digits than its factorization.

381233240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179891 (or 179887 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 381233240 is about 19525.1950054282. The cubic root of 381233240 is about 725.0983552651.

The spelling of 381233240 in words is "three hundred eighty-one million, two hundred thirty-three thousand, two hundred forty".