28682403 has 8 divisors (see below), whose sum is σ = 39906048. Its totient is φ = 18290184.

The previous prime is 28682399. The next prime is 28682413. The reversal of 28682403 is 30428682.

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

It is not a de Polignac number, because 28682403 - 2² = 28682399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28682413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207775 + ... + 207912.

It is an arithmetic number, because the mean of its divisors is an integer number (4988256).

Almost surely, 2^28682403 is an apocalyptic number.

28682403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28682403 is a deficient number, since it is larger than the sum of its proper divisors (11223645).

28682403 is a wasteful number, since it uses less digits than its factorization.

28682403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415713.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 28682403 is about 5355.5954850978. The cubic root of 28682403 is about 306.1060015516.

The spelling of 28682403 in words is "twenty-eight million, six hundred eighty-two thousand, four hundred three".