28752230 has 16 divisors (see below), whose sum is σ = 55735344. Its totient is φ = 10616160.

The previous prime is 28752211. The next prime is 28752239. The reversal of 28752230 is 3225782.

It is a junction number, because it is equal to n+sod(n) for n = 28752193 and 28752202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28752239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110456 + ... + 110715.

It is an arithmetic number, because the mean of its divisors is an integer number (3483459).

Almost surely, 2^28752230 is an apocalyptic number.

28752230 is a deficient number, since it is larger than the sum of its proper divisors (26983114).

28752230 is a wasteful number, since it uses less digits than its factorization.

28752230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221191.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28752230 is about 5362.1105919218. The cubic root of 28752230 is about 306.3542041620.

It can be divided in two parts, 28752 and 230, that added together give a palindrome (28982).

The spelling of 28752230 in words is "twenty-eight million, seven hundred fifty-two thousand, two hundred thirty".