28332770 has 16 divisors (see below), whose sum is σ = 51071040. Its totient is φ = 11317104.

The previous prime is 28332751. The next prime is 28332847. The reversal of 28332770 is 7723382.

It is a happy number.

It is a Curzon number.

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 in 7 ways as a sum of consecutive naturals, for example, 7649 + ... + 10731.

It is an arithmetic number, because the mean of its divisors is an integer number (3191940).

Almost surely, 2^28332770 is an apocalyptic number.

28332770 is a deficient number, since it is larger than the sum of its proper divisors (22738270).

28332770 is a wasteful number, since it uses less digits than its factorization.

28332770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 28332770 is about 5322.8535580081. The cubic root of 28332770 is about 304.8571220066.

The spelling of 28332770 in words is "twenty-eight million, three hundred thirty-two thousand, seven hundred seventy".