1194822728 has 60 divisors (see below), whose sum is σ = 2488947225. Its totient is φ = 537724000.

The previous prime is 1194822721. The next prime is 1194822757. The reversal of 1194822728 is 8272284911.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 829324804 + 365497924 = 28798^2 + 19118^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=24442.

It is a super-3 number, since 3×1194822728³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a Duffinian number.

Its product of digits (129024) is a multiple of the sum of its prime factors (252).

It is not an unprimeable number, because it can be changed into a prime (1194822721) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 11829878 + ... + 11829978.

Almost surely, 2^1194822728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1194822728

1194822728 is an abundant number, since it is smaller than the sum of its proper divisors (1294124497).

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

1194822728 is an frugal number, since it uses more digits than its factorization.

1194822728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 114 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 1194822728 is about 34566.2078915232. The cubic root of 1194822728 is about 1061.1281237378.

The spelling of 1194822728 in words is "one billion, one hundred ninety-four million, eight hundred twenty-two thousand, seven hundred twenty-eight".