1171498728 has 32 divisors (see below), whose sum is σ = 2931955200. Its totient is φ = 390071808.

The previous prime is 1171498709. The next prime is 1171498729. The reversal of 1171498728 is 8278941711.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1171498729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3976 + ... + 48567.

It is an arithmetic number, because the mean of its divisors is an integer number (91623600).

Almost surely, 2^1171498728 is an apocalyptic number.

It is an amenable number.

1171498728 is an abundant number, since it is smaller than the sum of its proper divisors (1760456472).

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

1171498728 is a wasteful number, since it uses less digits than its factorization.

1171498728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53481 (or 53477 counting only the distinct ones).

The product of its digits is 225792, while the sum is 48.

The square root of 1171498728 is about 34227.1635985222. The cubic root of 1171498728 is about 1054.1779804028.

The spelling of 1171498728 in words is "one billion, one hundred seventy-one million, four hundred ninety-eight thousand, seven hundred twenty-eight".