778330 has 16 divisors (see below), whose sum is σ = 1601280. Its totient is φ = 266832.

The previous prime is 778319. The next prime is 778333. The reversal of 778330 is 33877.

778330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (778333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5490 + ... + 5629.

It is an arithmetic number, because the mean of its divisors is an integer number (100080).

2⁷⁷⁸³³⁰ is an apocalyptic number.

778330 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

778330 is an abundant number, since it is smaller than the sum of its proper divisors (822950).

It is a weird number, because it is abundant, but not a pseudoperfect number.

778330 is a wasteful number, since it uses less digits than its factorization.

778330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11133.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 778330 is about 882.2301287079. The cubic root of 778330 is about 91.9858989100.

The spelling of 778330 in words is "seven hundred seventy-eight thousand, three hundred thirty".