28038036 has 48 divisors (see below), whose sum is σ = 70898688. Its totient is φ = 8572800.

The previous prime is 28038029. The next prime is 28038067. The reversal of 28038036 is 63083082.

It is a super-2 number, since 2×28038036² = 1572262925474592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28037994 and 28038012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29326 + ... + 30266.

It is an arithmetic number, because the mean of its divisors is an integer number (1477056).

Almost surely, 2^28038036 is an apocalyptic number.

28038036 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28038036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35449344).

28038036 is an abundant number, since it is smaller than the sum of its proper divisors (42860652).

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

28038036 is a wasteful number, since it uses less digits than its factorization.

28038036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 28038036 is about 5295.0954665615. The cubic root of 28038036 is about 303.7963346140.

The spelling of 28038036 in words is "twenty-eight million, thirty-eight thousand, thirty-six".