1228116 has 24 divisors (see below), whose sum is σ = 2921184. Its totient is φ = 401440.

The previous prime is 1228109. The next prime is 1228133. The reversal of 1228116 is 6118221.

1228116 = T₂₄₃ + T₂₄₄ + ... + T₂₇₈.

It is a junction number, because it is equal to n+sod(n) for n = 1228092 and 1228101.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 330 + ... + 1601.

It is an arithmetic number, because the mean of its divisors is an integer number (121716).

2^1228116 is an apocalyptic number.

It is an amenable number.

1228116 is an abundant number, since it is smaller than the sum of its proper divisors (1693068).

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

1228116 is a wasteful number, since it uses less digits than its factorization.

1228116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1989 counting only the distinct ones).

The product of its digits is 192, while the sum is 21.

The square root of 1228116 is about 1108.2039523481. The cubic root of 1228116 is about 107.0893945338.

The spelling of 1228116 in words is "one million, two hundred twenty-eight thousand, one hundred sixteen".