11152540 has 48 divisors (see below), whose sum is σ = 27502272. Its totient is φ = 3718656.

The previous prime is 11152517. The next prime is 11152541. The reversal of 11152540 is 4525111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11152541) 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 15 ways as a sum of consecutive naturals, for example, 4104 + ... + 6256.

It is an arithmetic number, because the mean of its divisors is an integer number (572964).

Almost surely, 2^11152540 is an apocalyptic number.

11152540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11152540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13751136).

11152540 is an abundant number, since it is smaller than the sum of its proper divisors (16349732).

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

11152540 is a wasteful number, since it uses less digits than its factorization.

11152540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206 (or 2204 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 11152540 is about 3339.5418847501. The cubic root of 11152540 is about 223.4213113444.

Adding to 11152540 its reverse (4525111), we get a palindrome (15677651).

It can be divided in two parts, 1115 and 2540, that added together give a triangular number (3655 = T₈₅).

The spelling of 11152540 in words is "eleven million, one hundred fifty-two thousand, five hundred forty".