1227740 has 48 divisors (see below), whose sum is σ = 2866752. Its totient is φ = 439296.

The previous prime is 1227719. The next prime is 1227769. The reversal of 1227740 is 477221.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7742 + ... + 7898.

It is an arithmetic number, because the mean of its divisors is an integer number (59724).

2^1227740 is an apocalyptic number.

1227740 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 1227740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433376).

1227740 is an abundant number, since it is smaller than the sum of its proper divisors (1639012).

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

1227740 is a wasteful number, since it uses less digits than its factorization.

1227740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 1227740 is about 1108.0342954981. The cubic root of 1227740 is about 107.0784645884.

The spelling of 1227740 in words is "one million, two hundred twenty-seven thousand, seven hundred forty".