28038012 has 96 divisors (see below), whose sum is σ = 73543680. Its totient is φ = 8279040.

The previous prime is 28038001. The next prime is 28038029. The reversal of 28038012 is 21083082.

It is a super-2 number, since 2×28038012² = 1572260233824288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248068 + ... + 248180.

It is an arithmetic number, because the mean of its divisors is an integer number (766080).

Almost surely, 2^28038012 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 28038012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36771840).

28038012 is an abundant number, since it is smaller than the sum of its proper divisors (45505668).

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

28038012 is a wasteful number, since it uses less digits than its factorization.

28038012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 28038012 is about 5295.0932003129. The cubic root of 28038012 is about 303.7962479328.

The spelling of 28038012 in words is "twenty-eight million, thirty-eight thousand, twelve".