11557240 has 16 divisors (see below), whose sum is σ = 26003880. Its totient is φ = 4622880.

The previous prime is 11557237. The next prime is 11557261. The reversal of 11557240 is 4275511.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 144426 + ... + 144505.

Almost surely, 2^11557240 is an apocalyptic number.

11557240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11557240 is an abundant number, since it is smaller than the sum of its proper divisors (14446640).

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

11557240 is a wasteful number, since it uses less digits than its factorization.

11557240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288942 (or 288938 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 11557240 is about 3399.5940934176. The cubic root of 11557240 is about 226.0917475402.

The spelling of 11557240 in words is "eleven million, five hundred fifty-seven thousand, two hundred forty".