28281360 has 40 divisors (see below), whose sum is σ = 87672960. Its totient is φ = 7541632.

The previous prime is 28281343. The next prime is 28281371. The reversal of 28281360 is 6318282.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 58680 + ... + 59159.

It is an arithmetic number, because the mean of its divisors is an integer number (2191824).

Almost surely, 2^28281360 is an apocalyptic number.

28281360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28281360 is an abundant number, since it is smaller than the sum of its proper divisors (59391600).

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

28281360 is a wasteful number, since it uses less digits than its factorization.

28281360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117855 (or 117849 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28281360 is about 5318.0221887465. The cubic root of 28281360 is about 304.6726219428.

The spelling of 28281360 in words is "twenty-eight million, two hundred eighty-one thousand, three hundred sixty".