1228016 has 40 divisors (see below), whose sum is σ = 2571264. Its totient is φ = 566720.

The previous prime is 1228013. The next prime is 1228021. The reversal of 1228016 is 6108221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228013) 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 7 ways as a sum of consecutive naturals, for example, 17261 + ... + 17331.

2^1228016 is an apocalyptic number.

1228016 is a gapful number since it is divisible by the number (16) 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 1228016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1285632).

1228016 is an abundant number, since it is smaller than the sum of its proper divisors (1343248).

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

1228016 is a wasteful number, since it uses less digits than its factorization.

1228016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1228016 is about 1108.1588333808. The cubic root of 1228016 is about 107.0864878512.

The spelling of 1228016 in words is "one million, two hundred twenty-eight thousand, sixteen".