1196776728 has 64 divisors (see below), whose sum is σ = 3799296000. Its totient is φ = 341935776.

The previous prime is 1196776667. The next prime is 1196776739. The reversal of 1196776728 is 8276776911.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

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, 394248 + ... + 397271.

It is an arithmetic number, because the mean of its divisors is an integer number (59364000).

Almost surely, 2^1196776728 is an apocalyptic number.

1196776728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1196776728 is an abundant number, since it is smaller than the sum of its proper divisors (2602519272).

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

1196776728 is a wasteful number, since it uses less digits than its factorization.

1196776728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791541 (or 791531 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The square root of 1196776728 is about 34594.4609439141. The cubic root of 1196776728 is about 1061.7062611287.

It can be divided in two parts, 1196 and 776728, that added together give a square (777924 = 882²).

The spelling of 1196776728 in words is "one billion, one hundred ninety-six million, seven hundred seventy-six thousand, seven hundred twenty-eight".