778260 has 96 divisors (see below), whose sum is σ = 2661120. Its totient is φ = 165888.

The previous prime is 778247. The next prime is 778301. The reversal of 778260 is 62877.

778260 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 778260.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7086 + ... + 7194.

It is an arithmetic number, because the mean of its divisors is an integer number (27720).

2⁷⁷⁸²⁶⁰ is an apocalyptic number.

778260 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 778260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330560).

778260 is an abundant number, since it is smaller than the sum of its proper divisors (1882860).

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

778260 is a wasteful number, since it uses less digits than its factorization.

778260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 778260 is about 882.1904556274. The cubic root of 778260 is about 91.9831412083.

The spelling of 778260 in words is "seven hundred seventy-eight thousand, two hundred sixty".