778230 has 24 divisors (see below), whose sum is σ = 2023632. Its totient is φ = 207504.

The previous prime is 778223. The next prime is 778237. The reversal of 778230 is 32877.

It is an interprime number because it is at equal distance from previous prime (778223) and next prime (778237).

It is a junction number, because it is equal to n+sod(n) for n = 778194 and 778203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778237) by changing a digit.

778230 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4234 + ... + 4413.

It is an arithmetic number, because the mean of its divisors is an integer number (84318).

2⁷⁷⁸²³⁰ is an apocalyptic number.

778230 is an abundant number, since it is smaller than the sum of its proper divisors (1245402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

778230 is a wasteful number, since it uses less digits than its factorization.

778230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8660 (or 8657 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 778230 is about 882.1734523324. The cubic root of 778230 is about 91.9819592855.

The spelling of 778230 in words is "seven hundred seventy-eight thousand, two hundred thirty".