381067740 has 144 divisors (see below), whose sum is σ = 1213561440. Its totient is φ = 100362240.

The previous prime is 381067727. The next prime is 381067747. The reversal of 381067740 is 47760183.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 381067695 and 381067704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381067747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 432100 + ... + 432980.

It is an arithmetic number, because the mean of its divisors is an integer number (8427510).

Almost surely, 2^381067740 is an apocalyptic number.

381067740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381067740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606780720).

381067740 is an abundant number, since it is smaller than the sum of its proper divisors (832493700).

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

381067740 is a wasteful number, since it uses less digits than its factorization.

381067740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 381067740 is about 19520.9564314866. The cubic root of 381067740 is about 724.9934141296.

The spelling of 381067740 in words is "three hundred eighty-one million, sixty-seven thousand, seven hundred forty".