133078778 has 8 divisors (see below), whose sum is σ = 228135072. Its totient is φ = 57033756.

The previous prime is 133078747. The next prime is 133078783. The reversal of 133078778 is 877870331.

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

It is a super-2 number, since 2×133078778² = 35419922307946568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4752800 + ... + 4752827.

It is an arithmetic number, because the mean of its divisors is an integer number (28516884).

Almost surely, 2^133078778 is an apocalyptic number.

133078778 is a deficient number, since it is larger than the sum of its proper divisors (95056294).

133078778 is an equidigital number, since it uses as much as digits as its factorization.

133078778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9505636.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 133078778 is about 11535.9775485218. The cubic root of 133078778 is about 510.5476342225.

It can be divided in two parts, 1330 and 78778, that added together give a palindrome (80108).

The spelling of 133078778 in words is "one hundred thirty-three million, seventy-eight thousand, seven hundred seventy-eight".