381065560 has 16 divisors (see below), whose sum is σ = 857397600. Its totient is φ = 152426208.

The previous prime is 381065551. The next prime is 381065561. The reversal of 381065560 is 65560183.

It is a super-2 number, since 2×381065560² = 290421922036227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381065561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4763280 + ... + 4763359.

It is an arithmetic number, because the mean of its divisors is an integer number (53587350).

Almost surely, 2^381065560 is an apocalyptic number.

It is an amenable number.

381065560 is an abundant number, since it is smaller than the sum of its proper divisors (476332040).

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

381065560 is a wasteful number, since it uses less digits than its factorization.

381065560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9526650 (or 9526646 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 381065560 is about 19520.9005939788. The cubic root of 381065560 is about 724.9920316207.

The spelling of 381065560 in words is "three hundred eighty-one million, sixty-five thousand, five hundred sixty".