1152203440 has 40 divisors (see below), whose sum is σ = 2680364160. Its totient is φ = 460624896.

The previous prime is 1152203431. The next prime is 1152203461. The reversal of 1152203440 is 443022511.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214872 + ... + 220168.

It is an arithmetic number, because the mean of its divisors is an integer number (67009104).

Almost surely, 2^1152203440 is an apocalyptic number.

1152203440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152203440 is an abundant number, since it is smaller than the sum of its proper divisors (1528160720).

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

1152203440 is a wasteful number, since it uses less digits than its factorization.

1152203440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8029 (or 8023 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1152203440 is about 33944.1223188934. The cubic root of 1152203440 is about 1048.3582628048.

Adding to 1152203440 its reverse (443022511), we get a palindrome (1595225951).

The spelling of 1152203440 in words is "one billion, one hundred fifty-two million, two hundred three thousand, four hundred forty".