8133778 has 8 divisors (see below), whose sum is σ = 12268620. Its totient is φ = 4044240.

The previous prime is 8133757. The next prime is 8133779. The reversal of 8133778 is 8773318.

It can be written as a sum of positive squares in 2 ways, for example, as 7800849 + 332929 = 2793^2 + 577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (8133779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10873 + ... + 11596.

Almost surely, 2^8133778 is an apocalyptic number.

8133778 is a deficient number, since it is larger than the sum of its proper divisors (4134842).

8133778 is a wasteful number, since it uses less digits than its factorization.

8133778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22652.

The product of its digits is 28224, while the sum is 37.

The square root of 8133778 is about 2851.9779101529. The cubic root of 8133778 is about 201.1086596796.

It can be divided in two parts, 8133 and 778, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 8133778 in words is "eight million, one hundred thirty-three thousand, seven hundred seventy-eight".