1227040 has 24 divisors (see below), whose sum is σ = 2899260. Its totient is φ = 490752.

The previous prime is 1226993. The next prime is 1227047. The reversal of 1227040 is 407221.

It can be written as a sum of positive squares in 2 ways, for example, as 1175056 + 51984 = 1084^2 + 228^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1227047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3675 + ... + 3994.

2^1227040 is an apocalyptic number.

1227040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227040 is an abundant number, since it is smaller than the sum of its proper divisors (1672220).

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

1227040 is an equidigital number, since it uses as much as digits as its factorization.

1227040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7684 (or 7676 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1227040 is about 1107.7183757616. The cubic root of 1227040 is about 107.0581103400.

The spelling of 1227040 in words is "one million, two hundred twenty-seven thousand, forty".