7322256778 has 4 divisors (see below), whose sum is σ = 10983385170. Its totient is φ = 3661128388.

The previous prime is 7322256769. The next prime is 7322256791. The reversal of 7322256778 is 8776522237.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6277868289 + 1044388489 = 79233^2 + 32317^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830564193 + ... + 1830564196.

Almost surely, 2^7322256778 is an apocalyptic number.

7322256778 is a deficient number, since it is larger than the sum of its proper divisors (3661128392).

7322256778 is a wasteful number, since it uses less digits than its factorization.

7322256778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661128391.

The product of its digits is 1975680, while the sum is 49.

The square root of 7322256778 is about 85570.1862683493. The cubic root of 7322256778 is about 1941.8468947782.

The spelling of 7322256778 in words is "seven billion, three hundred twenty-two million, two hundred fifty-six thousand, seven hundred seventy-eight".