1155302240 has 48 divisors (see below), whose sum is σ = 2731524768. Its totient is φ = 461761536.

The previous prime is 1155302237. The next prime is 1155302243. The reversal of 1155302240 is 422035511.

It is an interprime number because it is at equal distance from previous prime (1155302237) and next prime (1155302243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155302243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317069 + ... + 320691.

It is an arithmetic number, because the mean of its divisors is an integer number (56906766).

Almost surely, 2^1155302240 is an apocalyptic number.

1155302240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155302240 is an abundant number, since it is smaller than the sum of its proper divisors (1576222528).

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

1155302240 is a wasteful number, since it uses less digits than its factorization.

1155302240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631 (or 5623 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1155302240 is about 33989.7372746539. The cubic root of 1155302240 is about 1049.2972591796.

Adding to 1155302240 its reverse (422035511), we get a palindrome (1577337751).

It can be divided in two parts, 11 and 55302240, that multiplied together give a triangular number (608324640 = T₃₄₈₈₀).

The spelling of 1155302240 in words is "one billion, one hundred fifty-five million, three hundred two thousand, two hundred forty".