380784340 has 12 divisors (see below), whose sum is σ = 799647156. Its totient is φ = 152313728.

The previous prime is 380784337. The next prime is 380784347. The reversal of 380784340 is 43487083.

It can be written as a sum of positive squares in 2 ways, for example, as 147428164 + 233356176 = 12142^2 + 15276^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 380784340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380784347) 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, 9519589 + ... + 9519628.

It is an arithmetic number, because the mean of its divisors is an integer number (66637263).

Almost surely, 2^380784340 is an apocalyptic number.

It is an amenable number.

380784340 is an abundant number, since it is smaller than the sum of its proper divisors (418862816).

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

380784340 is a wasteful number, since it uses less digits than its factorization.

380784340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19039226 (or 19039224 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 380784340 is about 19513.6962157352. The cubic root of 380784340 is about 724.8136437395.

The spelling of 380784340 in words is "three hundred eighty million, seven hundred eighty-four thousand, three hundred forty".