776660028 has 48 divisors (see below), whose sum is σ = 1926076320. Its totient is φ = 242735104.

The previous prime is 776659999. The next prime is 776660041. The reversal of 776660028 is 820066677.

776660028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47800 + ... + 61952.

It is an arithmetic number, because the mean of its divisors is an integer number (40126590).

Almost surely, 2^776660028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 776660028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (963038160).

776660028 is an abundant number, since it is smaller than the sum of its proper divisors (1149416292).

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

776660028 is a wasteful number, since it uses less digits than its factorization.

776660028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14446 (or 14444 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 776660028 is about 27868.6208485458. The cubic root of 776660028 is about 919.2006399400.

The spelling of 776660028 in words is "seven hundred seventy-six million, six hundred sixty thousand, twenty-eight".