1152173440 has 64 divisors (see below), whose sum is σ = 3004834320. Its totient is φ = 418969600.

The previous prime is 1152173423. The next prime is 1152173447. The reversal of 1152173440 is 443712511.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1152173399 and 1152173408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152173447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74791 + ... + 88870.

Almost surely, 2^1152173440 is an apocalyptic number.

1152173440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152173440 is an abundant number, since it is smaller than the sum of its proper divisors (1852660880).

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

1152173440 is a wasteful number, since it uses less digits than its factorization.

1152173440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163691 (or 163679 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1152173440 is about 33943.6804132964. The cubic root of 1152173440 is about 1048.3491640005.

Adding to 1152173440 its reverse (443712511), we get a palindrome (1595885951).

The spelling of 1152173440 in words is "one billion, one hundred fifty-two million, one hundred seventy-three thousand, four hundred forty".