11828565 has 32 divisors (see below), whose sum is σ = 24034560. Its totient is φ = 5406912.

The previous prime is 11828563. The next prime is 11828587. The reversal of 11828565 is 56582811.

11828565 is a `hidden beast` number, since 11 + 82 + 8 + 565 = 666.

It is not a de Polignac number, because 11828565 - 2¹ = 11828563 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11828561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5314 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (751080).

Almost surely, 2^11828565 is an apocalyptic number.

11828565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11828565 is an abundant number, since it is smaller than the sum of its proper divisors (12205995).

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

11828565 is a wasteful number, since it uses less digits than its factorization.

11828565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12538 (or 12532 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 11828565 is about 3439.2680907426. The cubic root of 11828565 is about 227.8473701471.

The spelling of 11828565 in words is "eleven million, eight hundred twenty-eight thousand, five hundred sixty-five".