28523966 has 32 divisors (see below), whose sum is σ = 45800640. Its totient is φ = 13305600.

The previous prime is 28523939. The next prime is 28523969. The reversal of 28523966 is 66932582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28523969) by changing a digit.

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, 320450 + ... + 320538.

It is an arithmetic number, because the mean of its divisors is an integer number (1431270).

Almost surely, 2^28523966 is an apocalyptic number.

28523966 is a deficient number, since it is larger than the sum of its proper divisors (17276674).

28523966 is a wasteful number, since it uses less digits than its factorization.

28523966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260.

The product of its digits is 155520, while the sum is 41.

The square root of 28523966 is about 5340.7832758875. The cubic root of 28523966 is about 305.5413337195.

The spelling of 28523966 in words is "twenty-eight million, five hundred twenty-three thousand, nine hundred sixty-six".