28244866 has 32 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 12602304.

The previous prime is 28244861. The next prime is 28244873. The reversal of 28244866 is 66844282.

It is not an unprimeable number, because it can be changed into a prime (28244861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141835 + ... + 142033.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^28244866 is an apocalyptic number.

28244866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28244866 is a deficient number, since it is larger than the sum of its proper divisors (18929534).

28244866 is a wasteful number, since it uses less digits than its factorization.

28244866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370.

The product of its digits is 147456, while the sum is 40.

The square root of 28244866 is about 5314.5899183286. The cubic root of 28244866 is about 304.5415166424.

The spelling of 28244866 in words is "twenty-eight million, two hundred forty-four thousand, eight hundred sixty-six".