1358240 has 48 divisors (see below), whose sum is σ = 3460968. Its totient is φ = 500736.

The previous prime is 1358221. The next prime is 1358251. The reversal of 1358240 is 428531.

It can be written as a sum of positive squares in 4 ways, for example, as 659344 + 698896 = 812^2 + 836^2 .

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, 1754 + ... + 2406.

2^1358240 is an apocalyptic number.

1358240 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 1358240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1730484).

1358240 is an abundant number, since it is smaller than the sum of its proper divisors (2102728).

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

1358240 is a wasteful number, since it uses less digits than its factorization.

1358240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1358240 is about 1165.4355409031. The cubic root of 1358240 is about 110.7453513736.

The spelling of 1358240 in words is "one million, three hundred fifty-eight thousand, two hundred forty".