28829856 has 96 divisors (see below), whose sum is σ = 86220288. Its totient is φ = 8349440.

The previous prime is 28829849. The next prime is 28829873. The reversal of 28829856 is 65892882.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 15 ways as a sum of consecutive naturals, for example, 23695 + ... + 24881.

It is an arithmetic number, because the mean of its divisors is an integer number (898128).

Almost surely, 2^28829856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28829856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43110144).

28829856 is an abundant number, since it is smaller than the sum of its proper divisors (57390432).

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

28829856 is a wasteful number, since it uses less digits than its factorization.

28829856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234 (or 1226 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 28829856 is about 5369.3440940212. The cubic root of 28829856 is about 306.6296573696.

The spelling of 28829856 in words is "twenty-eight million, eight hundred twenty-nine thousand, eight hundred fifty-six".