8190778 has 8 divisors (see below), whose sum is σ = 12310272. Its totient is φ = 4087356.

The previous prime is 8190761. The next prime is 8190823. The reversal of 8190778 is 8770918.

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

It is a self number, because there is not a number n which added to its sum of digits gives 8190778.

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, 2650 + ... + 4837.

It is an arithmetic number, because the mean of its divisors is an integer number (1538784).

Almost surely, 2^8190778 is an apocalyptic number.

8190778 is a deficient number, since it is larger than the sum of its proper divisors (4119494).

8190778 is a wasteful number, since it uses less digits than its factorization.

8190778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8036.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 8190778 is about 2861.9535286234. The cubic root of 8190778 is about 201.5773438941.

The spelling of 8190778 in words is "eight million, one hundred ninety thousand, seven hundred seventy-eight".