1454240 has 48 divisors (see below), whose sum is σ = 3515400. Its totient is φ = 568320.

The previous prime is 1454239. The next prime is 1454249. The reversal of 1454240 is 424541.

It can be written as a sum of positive squares in 4 ways, for example, as 446224 + 1008016 = 668^2 + 1004^2 .

It is a super-2 number, since 2×1454240² = 4229627955200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1454249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9686 + ... + 9834.

2^1454240 is an apocalyptic number.

1454240 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 1454240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1757700).

1454240 is an abundant number, since it is smaller than the sum of its proper divisors (2061160).

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

1454240 is a wasteful number, since it uses less digits than its factorization.

1454240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1454240 is about 1205.9187368973. The cubic root of 1454240 is about 113.2953352046.

Adding to 1454240 its reverse (424541), we get a palindrome (1878781).

The spelling of 1454240 in words is "one million, four hundred fifty-four thousand, two hundred forty".