1452203440 has 80 divisors (see below), whose sum is σ = 3708691200. Its totient is φ = 526369536.

The previous prime is 1452203437. The next prime is 1452203503. The reversal of 1452203440 is 443022541.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1452203440² = 4217789662295667200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14191 + ... + 55729.

It is an arithmetic number, because the mean of its divisors is an integer number (46358640).

Almost surely, 2^1452203440 is an apocalyptic number.

1452203440 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 1452203440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1854345600).

1452203440 is an abundant number, since it is smaller than the sum of its proper divisors (2256487760).

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

1452203440 is a wasteful number, since it uses less digits than its factorization.

1452203440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41594 (or 41588 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1452203440 is about 38107.7871307165. The cubic root of 1452203440 is about 1132.4242313598.

Adding to 1452203440 its reverse (443022541), we get a palindrome (1895225981).

The spelling of 1452203440 in words is "one billion, four hundred fifty-two million, two hundred three thousand, four hundred forty".