1226880 has 128 divisors (see below), whose sum is σ = 4406400. Its totient is φ = 322560.

The previous prime is 1226867. The next prime is 1226891. The reversal of 1226880 is 886221.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17245 + ... + 17315.

It is an arithmetic number, because the mean of its divisors is an integer number (34425).

2^1226880 is an apocalyptic number.

1226880 is a gapful number since it is divisible by the number (10) 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 1226880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2203200).

1226880 is an abundant number, since it is smaller than the sum of its proper divisors (3179520).

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

1226880 is an equidigital number, since it uses as much as digits as its factorization.

1226880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1226880 is about 1107.6461528846. The cubic root of 1226880 is about 107.0534568535.

The spelling of 1226880 in words is "one million, two hundred twenty-six thousand, eight hundred eighty".