381560976 has 80 divisors (see below), whose sum is σ = 1099443520. Its totient is φ = 126696960.

The previous prime is 381560953. The next prime is 381560981. The reversal of 381560976 is 679065183.

It is a happy number.

381560976 is a `hidden beast` number, since 3 + 81 + 560 + 9 + 7 + 6 = 666.

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, 120696 + ... + 123816.

It is an arithmetic number, because the mean of its divisors is an integer number (13743044).

Almost surely, 2^381560976 is an apocalyptic number.

381560976 is a gapful number since it is divisible by the number (36) 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 381560976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (549721760).

381560976 is an abundant number, since it is smaller than the sum of its proper divisors (717882544).

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

381560976 is a wasteful number, since it uses less digits than its factorization.

381560976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 381560976 is about 19533.5858459219. The cubic root of 381560976 is about 725.3060782933.

The spelling of 381560976 in words is "three hundred eighty-one million, five hundred sixty thousand, nine hundred seventy-six".