776726028 has 108 divisors (see below), whose sum is σ = 2176214040. Its totient is φ = 233356032.

The previous prime is 776726009. The next prime is 776726029. The reversal of 776726028 is 820627677.

It is a happy number.

776726028 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 (776726029) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 260128 + ... + 263096.

It is an arithmetic number, because the mean of its divisors is an integer number (20150130).

Almost surely, 2^776726028 is an apocalyptic number.

776726028 is a gapful number since it is divisible by the number (78) 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 776726028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088107020).

776726028 is an abundant number, since it is smaller than the sum of its proper divisors (1399488012).

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

776726028 is a wasteful number, since it uses less digits than its factorization.

776726028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048 (or 3030 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 776726028 is about 27869.8049508783. The cubic root of 776726028 is about 919.2266768680.

The spelling of 776726028 in words is "seven hundred seventy-six million, seven hundred twenty-six thousand, twenty-eight".