1112778 has 20 divisors (see below), whose sum is σ = 2493810. Its totient is φ = 370872.

The previous prime is 1112777. The next prime is 1112779. The reversal of 1112778 is 8772111.

It is an interprime number because it is at equal distance from previous prime (1112777) and next prime (1112779).

It can be written as a sum of positive squares in only one way, i.e., 1108809 + 3969 = 1053^2 + 63^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1112777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3273 + ... + 3596.

2^1112778 is an apocalyptic number.

1112778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1112778 is an abundant number, since it is smaller than the sum of its proper divisors (1381032).

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

1112778 is an equidigital number, since it uses as much as digits as its factorization.

1112778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6883 (or 6874 counting only the distinct ones).

The product of its digits is 784, while the sum is 27.

The square root of 1112778 is about 1054.8829318934. The cubic root of 1112778 is about 103.6261850996.

1112778 divided by its sum of digits (27) gives a palindrome (41214).

Adding to 1112778 its reverse (8772111), we get a palindrome (9884889).

The spelling of 1112778 in words is "one million, one hundred twelve thousand, seven hundred seventy-eight".