1240288 has 48 divisors (see below), whose sum is σ = 2872800. Its totient is φ = 526848.

The previous prime is 1240273. The next prime is 1240307. The reversal of 1240288 is 8820421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10920 + ... + 11032.

It is an arithmetic number, because the mean of its divisors is an integer number (59850).

2^1240288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436400).

1240288 is an abundant number, since it is smaller than the sum of its proper divisors (1632512).

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

1240288 is an equidigital number, since it uses as much as digits as its factorization.

1240288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 1240288 is about 1113.6821808757. The cubic root of 1240288 is about 107.4420239033.

The spelling of 1240288 in words is "one million, two hundred forty thousand, two hundred eighty-eight".