2765322378 has 48 divisors (see below), whose sum is σ = 7374197376. Its totient is φ = 729315360.

The previous prime is 2765322349. The next prime is 2765322379. The reversal of 2765322378 is 8732235672.

2765322378 is a `hidden beast` number, since 27 + 6 + 532 + 23 + 78 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2765322379) 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, 842478 + ... + 845753.

It is an arithmetic number, because the mean of its divisors is an integer number (153629112).

Almost surely, 2^2765322378 is an apocalyptic number.

2765322378 is an abundant number, since it is smaller than the sum of its proper divisors (4608874998).

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

2765322378 is a wasteful number, since it uses less digits than its factorization.

2765322378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688259 (or 1688256 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 2765322378 is about 52586.3326159944. The cubic root of 2765322378 is about 1403.6169024412.

The spelling of 2765322378 in words is "two billion, seven hundred sixty-five million, three hundred twenty-two thousand, three hundred seventy-eight".