1452240 has 60 divisors (see below), whose sum is σ = 4879524. Its totient is φ = 387072.

The previous prime is 1452229. The next prime is 1452247. The reversal of 1452240 is 422541.

It can be written as a sum of positive squares in 2 ways, for example, as 898704 + 553536 = 948^2 + 744^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289 + ... + 1728.

2^1452240 is an apocalyptic number.

1452240 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 1452240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2439762).

1452240 is an abundant number, since it is smaller than the sum of its proper divisors (3427284).

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

1452240 is a wasteful number, since it uses less digits than its factorization.

1452240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1452240 is about 1205.0892083161. The cubic root of 1452240 is about 113.2433734409.

Adding to 1452240 its reverse (422541), we get a palindrome (1874781).

The spelling of 1452240 in words is "one million, four hundred fifty-two thousand, two hundred forty".