11540540 has 24 divisors (see below), whose sum is σ = 26438832. Its totient is φ = 4196480.

The previous prime is 11540537. The next prime is 11540561. The reversal of 11540540 is 4504511.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 26009 + ... + 26448.

It is an arithmetic number, because the mean of its divisors is an integer number (1101618).

Almost surely, 2^11540540 is an apocalyptic number.

11540540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11540540 is an abundant number, since it is smaller than the sum of its proper divisors (14898292).

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

11540540 is a wasteful number, since it uses less digits than its factorization.

11540540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52477 (or 52475 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 11540540 is about 3397.1370299121. The cubic root of 11540540 is about 225.9827955682.

The spelling of 11540540 in words is "eleven million, five hundred forty thousand, five hundred forty".