1115306028 has 72 divisors (see below), whose sum is σ = 2880805200. Its totient is φ = 363712896.

The previous prime is 1115305991. The next prime is 1115306089. The reversal of 1115306028 is 8206035111.

1115306028 is a `hidden beast` number, since 1 + 1 + 1 + 53 + 0 + 602 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1115305992 and 1115306010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 485250 + ... + 487542.

Almost surely, 2^1115306028 is an apocalyptic number.

1115306028 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 1115306028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440402600).

1115306028 is an abundant number, since it is smaller than the sum of its proper divisors (1765499172).

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

1115306028 is a wasteful number, since it uses less digits than its factorization.

1115306028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591 (or 2586 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1115306028 is about 33396.1978075349. The cubic root of 1115306028 is about 1037.0459899253.

The spelling of 1115306028 in words is "one billion, one hundred fifteen million, three hundred six thousand, twenty-eight".