381430782 has 24 divisors (see below), whose sum is σ = 857043096. Its totient is φ = 127143432.

The previous prime is 381430739. The next prime is 381430783. The reversal of 381430782 is 287034183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381430783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391933 + ... + 392904.

It is an arithmetic number, because the mean of its divisors is an integer number (35710129).

Almost surely, 2^381430782 is an apocalyptic number.

381430782 is an abundant number, since it is smaller than the sum of its proper divisors (475612314).

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

381430782 is an equidigital number, since it uses as much as digits as its factorization.

381430782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784854 (or 784842 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 381430782 is about 19530.2529937531. The cubic root of 381430782 is about 725.2235740123.

It can be divided in two parts, 3814 and 30782, that added together give a square (34596 = 186²).

The spelling of 381430782 in words is "three hundred eighty-one million, four hundred thirty thousand, seven hundred eighty-two".