11533530 has 32 divisors (see below), whose sum is σ = 27946944. Its totient is φ = 3046016.

The previous prime is 11533523. The next prime is 11533541. The reversal of 11533530 is 3533511.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11533497 and 11533506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1414 + ... + 5006.

It is an arithmetic number, because the mean of its divisors is an integer number (873342).

Almost surely, 2^11533530 is an apocalyptic number.

11533530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11533530 is an abundant number, since it is smaller than the sum of its proper divisors (16413414).

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

11533530 is a wasteful number, since it uses less digits than its factorization.

11533530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 11533530 is about 3396.1051220479. The cubic root of 11533530 is about 225.9370305158.

The spelling of 11533530 in words is "eleven million, five hundred thirty-three thousand, five hundred thirty".