1179728140 has 24 divisors (see below), whose sum is σ = 2491277040. Its totient is φ = 469253568.

The previous prime is 1179728131. The next prime is 1179728159. The reversal of 1179728140 is 418279711.

It is a junction number, because it is equal to n+sod(n) for n = 1179728093 and 1179728102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161187 + ... + 168346.

It is an arithmetic number, because the mean of its divisors is an integer number (103803210).

Almost surely, 2^1179728140 is an apocalyptic number.

1179728140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1179728140 is an abundant number, since it is smaller than the sum of its proper divisors (1311548900).

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

1179728140 is a wasteful number, since it uses less digits than its factorization.

1179728140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329721 (or 329719 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 1179728140 is about 34347.1707714042. The cubic root of 1179728140 is about 1056.6406463731.

The spelling of 1179728140 in words is "one billion, one hundred seventy-nine million, seven hundred twenty-eight thousand, one hundred forty".