12288784 has 10 divisors (see below), whose sum is σ = 23809550. Its totient is φ = 6144384.

The previous prime is 12288781. The next prime is 12288791. The reversal of 12288784 is 48788221.

It can be written as a sum of positive squares in only one way, i.e., 6906384 + 5382400 = 2628^2 + 2320^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12288781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384009 + ... + 384040.

It is an arithmetic number, because the mean of its divisors is an integer number (2380955).

Almost surely, 2^12288784 is an apocalyptic number.

It is an amenable number.

12288784 is a deficient number, since it is larger than the sum of its proper divisors (11520766).

12288784 is an equidigital number, since it uses as much as digits as its factorization.

12288784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768057 (or 768051 counting only the distinct ones).

The product of its digits is 57344, while the sum is 40.

The square root of 12288784 is about 3505.5361929383. The cubic root of 12288784 is about 230.7648387996.

The spelling of 12288784 in words is "twelve million, two hundred eighty-eight thousand, seven hundred eighty-four".