28513282 has 8 divisors (see below), whose sum is σ = 48879936. Its totient is φ = 12219972.

The previous prime is 28513279. The next prime is 28513283. The reversal of 28513282 is 28231582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28513283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018318 + ... + 1018345.

It is an arithmetic number, because the mean of its divisors is an integer number (6109992).

Almost surely, 2^28513282 is an apocalyptic number.

28513282 is a deficient number, since it is larger than the sum of its proper divisors (20366654).

28513282 is a wasteful number, since it uses less digits than its factorization.

28513282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036672.

The product of its digits is 7680, while the sum is 31.

The square root of 28513282 is about 5339.7829543906. The cubic root of 28513282 is about 305.5031808755.

The spelling of 28513282 in words is "twenty-eight million, five hundred thirteen thousand, two hundred eighty-two".