28752668 has 24 divisors (see below), whose sum is σ = 60006912. Its totient is φ = 11786544.

The previous prime is 28752667. The next prime is 28752671. The reversal of 28752668 is 86625782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28752667) 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, 21680 + ... + 22967.

It is an arithmetic number, because the mean of its divisors is an integer number (2500288).

Almost surely, 2^28752668 is an apocalyptic number.

28752668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28752668 is an abundant number, since it is smaller than the sum of its proper divisors (31254244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28752668 is a wasteful number, since it uses less digits than its factorization.

28752668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44681 (or 44679 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 28752668 is about 5362.1514338929. The cubic root of 28752668 is about 306.3557597800.

The spelling of 28752668 in words is "twenty-eight million, seven hundred fifty-two thousand, six hundred sixty-eight".