11488821 has 16 divisors (see below), whose sum is σ = 16568064. Its totient is φ = 7053824.

The previous prime is 11488769. The next prime is 11488837. The reversal of 11488821 is 12888411.

11488821 is a nontrivial binomial coefficient, being equal to C(4794, 2).

It is a cyclic number.

It is not a de Polignac number, because 11488821 - 2¹⁴ = 11472437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11483821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1 + ... + 4793.

It is an arithmetic number, because the mean of its divisors is an integer number (1035504).

Almost surely, 2^11488821 is an apocalyptic number.

11488821 is the 4793-rd triangular number and also the 2397-th hexagonal number.

It is an amenable number.

11488821 is a deficient number, since it is larger than the sum of its proper divisors (5079243).

11488821 is a wasteful number, since it uses less digits than its factorization.

11488821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860.

The product of its digits is 4096, while the sum is 33.

The square root of 11488821 is about 3389.5163371785. The cubic root of 11488821 is about 225.6447089287.

The spelling of 11488821 in words is "eleven million, four hundred eighty-eight thousand, eight hundred twenty-one".