28649814 has 8 divisors (see below), whose sum is σ = 57299640. Its totient is φ = 9549936.

The previous prime is 28649813. The next prime is 28649827. The reversal of 28649814 is 41894682.

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

28649814 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28649813) 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, 2387479 + ... + 2387490.

It is an arithmetic number, because the mean of its divisors is an integer number (7162455).

Almost surely, 2^28649814 is an apocalyptic number.

28649814 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.

28649814 is a wasteful number, since it uses less digits than its factorization.

28649814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4774974.

The product of its digits is 110592, while the sum is 42.

The square root of 28649814 is about 5352.5521015680. The cubic root of 28649814 is about 305.9900248788.

The spelling of 28649814 in words is "twenty-eight million, six hundred forty-nine thousand, eight hundred fourteen".