28682418 has 8 divisors (see below), whose sum is σ = 57364848. Its totient is φ = 9560804.

The previous prime is 28682413. The next prime is 28682431. The reversal of 28682418 is 81428682.

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

28682418 is an admirable number.

It is a super-2 number, since 2×28682418² = 1645362204653448, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2390196 + ... + 2390207.

It is an arithmetic number, because the mean of its divisors is an integer number (7170606).

Almost surely, 2^28682418 is an apocalyptic number.

28682418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28682418 is a wasteful number, since it uses less digits than its factorization.

28682418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4780408.

The product of its digits is 49152, while the sum is 39.

The square root of 28682418 is about 5355.5968855021. The cubic root of 28682418 is about 306.1060549129.

The spelling of 28682418 in words is "twenty-eight million, six hundred eighty-two thousand, four hundred eighteen".