380807766 has 48 divisors (see below), whose sum is σ = 881524800. Its totient is φ = 118453104.

The previous prime is 380807759. The next prime is 380807767. The reversal of 380807766 is 667708083.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380807767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14605 + ... + 31223.

It is an arithmetic number, because the mean of its divisors is an integer number (18365100).

Almost surely, 2^380807766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 380807766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440762400).

380807766 is an abundant number, since it is smaller than the sum of its proper divisors (500717034).

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

380807766 is a wasteful number, since it uses less digits than its factorization.

380807766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16713 (or 16710 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 380807766 is about 19514.2964515762. The cubic root of 380807766 is about 724.8285070400.

The spelling of 380807766 in words is "three hundred eighty million, eight hundred seven thousand, seven hundred sixty-six".