28951896 has 64 divisors (see below), whose sum is σ = 76838400. Its totient is φ = 9065088.

The previous prime is 28951849. The next prime is 28951903. The reversal of 28951896 is 69815982.

It is a happy number.

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, 78705 + ... + 79071.

It is an arithmetic number, because the mean of its divisors is an integer number (1200600).

Almost surely, 2^28951896 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 28951896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38419200).

28951896 is an abundant number, since it is smaller than the sum of its proper divisors (47886504).

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

28951896 is a wasteful number, since it uses less digits than its factorization.

28951896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 564 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 28951896 is about 5380.6966091762. The cubic root of 28951896 is about 307.0617141544.

The spelling of 28951896 in words is "twenty-eight million, nine hundred fifty-one thousand, eight hundred ninety-six".