1066240 has 108 divisors (see below), whose sum is σ = 3145716. Its totient is φ = 344064.

The previous prime is 1066237. The next prime is 1066253. The reversal of 1066240 is 426601.

It can be written as a sum of positive squares in 2 ways, for example, as 614656 + 451584 = 784^2 + 672^2 .

It is a super-2 number, since 2×1066240² = 2273735475200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62712 + ... + 62728.

It is an arithmetic number, because the mean of its divisors is an integer number (29127).

2^1066240 is an apocalyptic number.

1066240 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 1066240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572858).

1066240 is an abundant number, since it is smaller than the sum of its proper divisors (2079476).

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

1066240 is an equidigital number, since it uses as much as digits as its factorization.

1066240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1066240 is about 1032.5889792168. The cubic root of 1066240 is about 102.1609658902.

The spelling of 1066240 in words is "one million, sixty-six thousand, two hundred forty".