1455230440 has 64 divisors (see below), whose sum is σ = 3412270800. Its totient is φ = 557856768.

The previous prime is 1455230437. The next prime is 1455230443. The reversal of 1455230440 is 440325541.

It is an interprime number because it is at equal distance from previous prime (1455230437) and next prime (1455230443).

It can be written as a sum of positive squares in 8 ways, for example, as 415425924 + 1039804516 = 20382^2 + 32246^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1455230399 and 1455230408.

It is not an unprimeable number, because it can be changed into a prime (1455230443) by changing a digit.

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, 154342 + ... + 163498.

Almost surely, 2^1455230440 is an apocalyptic number.

1455230440 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 1455230440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1706135400).

1455230440 is an abundant number, since it is smaller than the sum of its proper divisors (1957040360).

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

1455230440 is a wasteful number, since it uses less digits than its factorization.

1455230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9334 (or 9330 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1455230440 is about 38147.4827478826. The cubic root of 1455230440 is about 1133.2105007207.

Adding to 1455230440 its reverse (440325541), we get a palindrome (1895555981).

The spelling of 1455230440 in words is "one billion, four hundred fifty-five million, two hundred thirty thousand, four hundred forty".