381042860 has 48 divisors (see below), whose sum is σ = 874298880. Its totient is φ = 138344640.

The previous prime is 381042839. The next prime is 381042877. The reversal of 381042860 is 68240183.

It is a super-2 number, since 2×381042860² = 290387322313959200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 227747 + ... + 229413.

It is an arithmetic number, because the mean of its divisors is an integer number (18214560).

Almost surely, 2^381042860 is an apocalyptic number.

It is an amenable number.

381042860 is an abundant number, since it is smaller than the sum of its proper divisors (493256020).

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

381042860 is a wasteful number, since it uses less digits than its factorization.

381042860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726 (or 2724 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 381042860 is about 19520.3191572269. The cubic root of 381042860 is about 724.9776354576.

The spelling of 381042860 in words is "three hundred eighty-one million, forty-two thousand, eight hundred sixty".