28644360 has 32 divisors (see below), whose sum is σ = 85933440. Its totient is φ = 7638464.

The previous prime is 28644359. The next prime is 28644377. The reversal of 28644360 is 6344682.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119232 + ... + 119471.

It is an arithmetic number, because the mean of its divisors is an integer number (2685420).

Almost surely, 2^28644360 is an apocalyptic number.

28644360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28644360 is an abundant number, since it is smaller than the sum of its proper divisors (57289080).

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

28644360 is a wasteful number, since it uses less digits than its factorization.

28644360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238717 (or 238713 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 28644360 is about 5352.0426007273. The cubic root of 28644360 is about 305.9706067713.

The spelling of 28644360 in words is "twenty-eight million, six hundred forty-four thousand, three hundred sixty".