11540538 has 24 divisors (see below), whose sum is σ = 25478388. Its totient is φ = 3773952.

The previous prime is 11540537. The next prime is 11540561. The reversal of 11540538 is 83504511.

It can be written as a sum of positive squares in 2 ways, for example, as 11108889 + 431649 = 3333^2 + 657^2 .

It is not an unprimeable number, because it can be changed into a prime (11540531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5095 + ... + 7002.

Almost surely, 2^11540538 is an apocalyptic number.

11540538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11540538 is an abundant number, since it is smaller than the sum of its proper divisors (13937850).

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

11540538 is a wasteful number, since it uses less digits than its factorization.

11540538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12158 (or 12155 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 11540538 is about 3397.1367355466. The cubic root of 11540538 is about 225.9827825138.

The spelling of 11540538 in words is "eleven million, five hundred forty thousand, five hundred thirty-eight".