28408846 has 4 divisors (see below), whose sum is σ = 42613272. Its totient is φ = 14204422.

The previous prime is 28408801. The next prime is 28408847. The reversal of 28408846 is 64880482.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 28408799 and 28408808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28408847) 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 as a sum of consecutive naturals, namely, 7102210 + ... + 7102213.

It is an arithmetic number, because the mean of its divisors is an integer number (10653318).

Almost surely, 2^28408846 is an apocalyptic number.

28408846 is a deficient number, since it is larger than the sum of its proper divisors (14204426).

28408846 is a wasteful number, since it uses less digits than its factorization.

28408846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14204425.

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 28408846 is about 5329.9949343316. The cubic root of 28408846 is about 305.1297342917.

The spelling of 28408846 in words is "twenty-eight million, four hundred eight thousand, eight hundred forty-six".