28074816 has 224 divisors, whose sum is σ = 103388160. Its totient is φ = 7257600.

The previous prime is 28074811. The next prime is 28074817. The reversal of 28074816 is 61847082.

It is a tau number, because it is divible by the number of its divisors (224).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28074811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132951 + ... + 133161.

Almost surely, 2^28074816 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 28074816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51694080).

28074816 is an abundant number, since it is smaller than the sum of its proper divisors (75313344).

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

28074816 is a wasteful number, since it uses less digits than its factorization.

28074816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28074816 is about 5298.5673535400. The cubic root of 28074816 is about 303.9291155136.

The spelling of 28074816 in words is "twenty-eight million, seventy-four thousand, eight hundred sixteen".