28446912 has 168 divisors, whose sum is σ = 91531440. Its totient is φ = 8386560.

The previous prime is 28446911. The next prime is 28446937. The reversal of 28446912 is 21964482.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28446911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217087 + ... + 217217.

It is an arithmetic number, because the mean of its divisors is an integer number (544830).

Almost surely, 2^28446912 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 28446912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45765720).

28446912 is an abundant number, since it is smaller than the sum of its proper divisors (63084528).

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

28446912 is a wasteful number, since it uses less digits than its factorization.

28446912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 178 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 28446912 is about 5333.5646616498. The cubic root of 28446912 is about 305.2659581110.

The spelling of 28446912 in words is "twenty-eight million, four hundred forty-six thousand, nine hundred twelve".