28336992 has 48 divisors (see below), whose sum is σ = 75660480. Its totient is φ = 9283712.

The previous prime is 28336991. The next prime is 28337009. The reversal of 28336992 is 29963382.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28336991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3163 + ... + 8165.

It is an arithmetic number, because the mean of its divisors is an integer number (1576260).

Almost surely, 2^28336992 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 28336992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37830240).

28336992 is an abundant number, since it is smaller than the sum of its proper divisors (47323488).

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

28336992 is a wasteful number, since it uses less digits than its factorization.

28336992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075 (or 5067 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 28336992 is about 5323.2501350209. The cubic root of 28336992 is about 304.8722639882.

The spelling of 28336992 in words is "twenty-eight million, three hundred thirty-six thousand, nine hundred ninety-two".