1152240 has 40 divisors (see below), whose sum is σ = 3572688. Its totient is φ = 307200.

The previous prime is 1152233. The next prime is 1152287. The reversal of 1152240 is 422511.

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

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 2161 + ... + 2640.

2^1152240 is an apocalyptic number.

1152240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152240 is an abundant number, since it is smaller than the sum of its proper divisors (2420448).

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

1152240 is a wasteful number, since it uses less digits than its factorization.

1152240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4811 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1152240 is about 1073.4244267763. The cubic root of 1152240 is about 104.8369351001.

Adding to 1152240 its reverse (422511), we get a palindrome (1574751).

The spelling of 1152240 in words is "one million, one hundred fifty-two thousand, two hundred forty".