381081732 has 24 divisors (see below), whose sum is σ = 892887072. Its totient is φ = 126499200.

The previous prime is 381081719. The next prime is 381081737. The reversal of 381081732 is 237180183.

It is a junction number, because it is equal to n+sod(n) for n = 381081693 and 381081702.

It is not an unprimeable number, because it can be changed into a prime (381081737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62994 + ... + 68777.

It is an arithmetic number, because the mean of its divisors is an integer number (37203628).

Almost surely, 2^381081732 is an apocalyptic number.

It is an amenable number.

381081732 is an abundant number, since it is smaller than the sum of its proper divisors (511805340).

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

381081732 is a wasteful number, since it uses less digits than its factorization.

381081732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132019 (or 132017 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 381081732 is about 19521.3148122763. The cubic root of 381081732 is about 725.0022874284.

The spelling of 381081732 in words is "three hundred eighty-one million, eighty-one thousand, seven hundred thirty-two".