778050 has 144 divisors (see below), whose sum is σ = 2708160. Its totient is φ = 155520.

The previous prime is 778049. The next prime is 778051. The reversal of 778050 is 50877.

778050 = 153² + 154² + ... + 180².

It is an interprime number because it is at equal distance from previous prime (778049) and next prime (778051).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778051) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40941 + ... + 40959.

2⁷⁷⁸⁰⁵⁰ is an apocalyptic number.

778050 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 778050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354080).

778050 is an abundant number, since it is smaller than the sum of its proper divisors (1930110).

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

778050 is a wasteful number, since it uses less digits than its factorization.

778050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 778050 is about 882.0714256793. The cubic root of 778050 is about 91.9748671108.

The spelling of 778050 in words is "seven hundred seventy-eight thousand, fifty".