11097540 has 48 divisors (see below), whose sum is σ = 34527360. Its totient is φ = 2959200.

The previous prime is 11097497. The next prime is 11097551. The reversal of 11097540 is 4579011.

11097540 is a `hidden beast` number, since 110 + 9 + 7 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 9736 + ... + 10815.

It is an arithmetic number, because the mean of its divisors is an integer number (719320).

Almost surely, 2^11097540 is an apocalyptic number.

11097540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11097540 is an abundant number, since it is smaller than the sum of its proper divisors (23429820).

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

11097540 is a wasteful number, since it uses less digits than its factorization.

11097540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20569 (or 20561 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 11097540 is about 3331.2970446960. The cubic root of 11097540 is about 223.0534301916.

It can be divided in two parts, 1109 and 7540, that added together give a square (8649 = 93²).

The spelling of 11097540 in words is "eleven million, ninety-seven thousand, five hundred forty".