1153534240 has 24 divisors (see below), whose sum is σ = 2725225020. Its totient is φ = 461413632.

The previous prime is 1153534229. The next prime is 1153534253. The reversal of 1153534240 is 424353511.

It can be written as a sum of positive squares in 2 ways, for example, as 1085570704 + 67963536 = 32948^2 + 8244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1153534199 and 1153534208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3604635 + ... + 3604954.

Almost surely, 2^1153534240 is an apocalyptic number.

1153534240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153534240 is an abundant number, since it is smaller than the sum of its proper divisors (1571690780).

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

1153534240 is an equidigital number, since it uses as much as digits as its factorization.

1153534240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209604 (or 7209596 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1153534240 is about 33963.7194665131. The cubic root of 1153534240 is about 1048.7617269661.

Adding to 1153534240 its reverse (424353511), we get a palindrome (1577887751).

The spelling of 1153534240 in words is "one billion, one hundred fifty-three million, five hundred thirty-four thousand, two hundred forty".