28611488 has 12 divisors (see below), whose sum is σ = 56328930. Its totient is φ = 14305728.

The previous prime is 28611463. The next prime is 28611497. The reversal of 28611488 is 88411682.

It can be written as a sum of positive squares in only one way, i.e., 26337424 + 2274064 = 5132^2 + 1508^2 .

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 as a sum of consecutive naturals, namely, 447023 + ... + 447086.

Almost surely, 2^28611488 is an apocalyptic number.

It is an amenable number.

28611488 is a deficient number, since it is larger than the sum of its proper divisors (27717442).

28611488 is an equidigital number, since it uses as much as digits as its factorization.

28611488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894119 (or 894111 counting only the distinct ones).

The product of its digits is 24576, while the sum is 38.

The square root of 28611488 is about 5348.9707421148. The cubic root of 28611488 is about 305.8535189667.

The spelling of 28611488 in words is "twenty-eight million, six hundred eleven thousand, four hundred eighty-eight".