11323540 has 24 divisors (see below), whose sum is σ = 23919840. Its totient is φ = 4502688.

The previous prime is 11323519. The next prime is 11323549. The reversal of 11323540 is 4532311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1999 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (996660).

Almost surely, 2^11323540 is an apocalyptic number.

11323540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11323540 is an abundant number, since it is smaller than the sum of its proper divisors (12596300).

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

11323540 is a wasteful number, since it uses less digits than its factorization.

11323540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351 (or 3349 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 11323540 is about 3365.0468050237. The cubic root of 11323540 is about 224.5574180643.

Adding to 11323540 its reverse (4532311), we get a palindrome (15855851).

It can be divided in two parts, 113 and 23540, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 11323540 in words is "eleven million, three hundred twenty-three thousand, five hundred forty".