1170505728 has 336 divisors, whose sum is σ = 4082896035. Its totient is φ = 334430208.

The previous prime is 1170505727. The next prime is 1170505753. The reversal of 1170505728 is 8275050711.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

1170505728 is a `hidden beast` number, since 11 + 70 + 5 + 0 + 572 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 585252864 + 585252864 = 24192^2 + 24192^2 .

It is a tau number, because it is divible by the number of its divisors (336).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=24192.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1170505692 and 1170505701.

It is not an unprimeable number, because it can be changed into a prime (1170505727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 167215101 + ... + 167215107.

Almost surely, 2^1170505728 is an apocalyptic number.

1170505728 is a gapful number since it is divisible by the number (18) 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 1170505728

1170505728 is an abundant number, since it is smaller than the sum of its proper divisors (2912390307).

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

1170505728 is an frugal number, since it uses more digits than its factorization.

1170505728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62 (or 12 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 36.

The square root of 1170505728 is about 34212.6545009299. The cubic root of 1170505728 is about 1053.8800444866.

The spelling of 1170505728 in words is "one billion, one hundred seventy million, five hundred five thousand, seven hundred twenty-eight".