28893336 has 64 divisors (see below), whose sum is σ = 79833600. Its totient is φ = 8667648.

The previous prime is 28893331. The next prime is 28893341. The reversal of 28893336 is 63339882.

It is an interprime number because it is at equal distance from previous prime (28893331) and next prime (28893341).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28893331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7845 + ... + 10923.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^28893336 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 28893336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39916800).

28893336 is an abundant number, since it is smaller than the sum of its proper divisors (50940264).

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

28893336 is a wasteful number, since it uses less digits than its factorization.

28893336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128 (or 3124 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 28893336 is about 5375.2521801307. The cubic root of 28893336 is about 306.8545467071.

The spelling of 28893336 in words is "twenty-eight million, eight hundred ninety-three thousand, three hundred thirty-six".