1112012028 has 18 divisors (see below), whose sum is σ = 2810919384. Its totient is φ = 370670664.

The previous prime is 1112012021. The next prime is 1112012029. The reversal of 1112012028 is 8202102111.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1112012028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112012021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15444576 + ... + 15444647.

It is an arithmetic number, because the mean of its divisors is an integer number (156162188).

Almost surely, 2^1112012028 is an apocalyptic number.

1112012028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1112012028 is an abundant number, since it is smaller than the sum of its proper divisors (1698907356).

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

1112012028 is a wasteful number, since it uses less digits than its factorization.

1112012028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30889233 (or 30889228 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 1112012028 is about 33346.8443484537. The cubic root of 1112012028 is about 1036.0240288499.

Adding to 1112012028 its reverse (8202102111), we get a palindrome (9314114139).

The spelling of 1112012028 in words is "one billion, one hundred twelve million, twelve thousand, twenty-eight".