1228680 has 48 divisors (see below), whose sum is σ = 3994380. Its totient is φ = 327552.

The previous prime is 1228679. The next prime is 1228691. The reversal of 1228680 is 868221.

It can be written as a sum of positive squares in 2 ways, for example, as 1179396 + 49284 = 1086^2 + 222^2 .

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 11 ways as a sum of consecutive naturals, for example, 1347 + ... + 2066.

2^1228680 is an apocalyptic number.

1228680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228680 is an abundant number, since it is smaller than the sum of its proper divisors (2765700).

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

1228680 is a wasteful number, since it uses less digits than its factorization.

1228680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430 (or 3423 counting only the distinct ones).

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

The square root of 1228680 is about 1108.4583889348. The cubic root of 1228680 is about 107.1057852697.

The spelling of 1228680 in words is "one million, two hundred twenty-eight thousand, six hundred eighty".