1170728 has 16 divisors (see below), whose sum is σ = 2364180. Its totient is φ = 540288.

The previous prime is 1170727. The next prime is 1170751. The reversal of 1170728 is 8270711.

1170728 = T₂₈₇ + T₂₈₈ + ... + T₃₁₂.

It can be written as a sum of positive squares in 2 ways, for example, as 1170724 + 4 = 1082^2 + 2^2 .

It is a Smith number, since the sum of its digits (26) 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 (26).

It is a junction number, because it is equal to n+sod(n) for n = 1170697 and 1170706.

It is not an unprimeable number, because it can be changed into a prime (1170721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5525 + ... + 5732.

2^1170728 is an apocalyptic number.

It is an amenable number.

1170728 is an abundant number, since it is smaller than the sum of its proper divisors (1193452).

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

1170728 is a wasteful number, since it uses less digits than its factorization.

1170728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11276 (or 11272 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 1170728 is about 1082.0018484273. The cubic root of 1170728 is about 105.3946748759.

The spelling of 1170728 in words is "one million, one hundred seventy thousand, seven hundred twenty-eight".