28112604 has 48 divisors (see below), whose sum is σ = 70992768. Its totient is φ = 8607168.

The previous prime is 28112599. The next prime is 28112621. The reversal of 28112604 is 40621182.

It is a super-3 number, since 3×28112604³ (a number of 23 digits) contains 333 as substring.

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, 47599 + ... + 48185.

It is an arithmetic number, because the mean of its divisors is an integer number (1479016).

Almost surely, 2^28112604 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 28112604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35496384).

28112604 is an abundant number, since it is smaller than the sum of its proper divisors (42880164).

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

28112604 is a wasteful number, since it uses less digits than its factorization.

28112604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 912 counting only the distinct ones).

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

The square root of 28112604 is about 5302.1320240069. The cubic root of 28112604 is about 304.0654147088.

Adding to 28112604 its reverse (40621182), we get a palindrome (68733786).

The spelling of 28112604 in words is "twenty-eight million, one hundred twelve thousand, six hundred four".