28649424 has 20 divisors (see below), whose sum is σ = 74011136. Its totient is φ = 9549792.

The previous prime is 28649407. The next prime is 28649459. The reversal of 28649424 is 42494682.

It is a congruent number.

It is an unprimeable number.

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, 298384 + ... + 298479.

Almost surely, 2^28649424 is an apocalyptic number.

28649424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28649424 is an abundant number, since it is smaller than the sum of its proper divisors (45361712).

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

28649424 is a wasteful number, since it uses less digits than its factorization.

28649424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596874 (or 596868 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 28649424 is about 5352.5156702246. The cubic root of 28649424 is about 305.9886364271.

The spelling of 28649424 in words is "twenty-eight million, six hundred forty-nine thousand, four hundred twenty-four".