28843680 has 48 divisors (see below), whose sum is σ = 90859104. Its totient is φ = 7691520.

The previous prime is 28843651. The next prime is 28843693. The reversal of 28843680 is 8634882.

It is a tau number, because it is divible by the number of its divisors (48).

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, 29566 + ... + 30525.

It is an arithmetic number, because the mean of its divisors is an integer number (1892898).

Almost surely, 2^28843680 is an apocalyptic number.

28843680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28843680 is an abundant number, since it is smaller than the sum of its proper divisors (62015424).

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

28843680 is a wasteful number, since it uses less digits than its factorization.

28843680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60109 (or 60101 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 28843680 is about 5370.6312478144. The cubic root of 28843680 is about 306.6786594764.

The spelling of 28843680 in words is "twenty-eight million, eight hundred forty-three thousand, six hundred eighty".