28259004 has 48 divisors (see below), whose sum is σ = 71124480. Its totient is φ = 8703360.

The previous prime is 28258999. The next prime is 28259027. The reversal of 28259004 is 40095282.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 7837 + ... + 10859.

It is an arithmetic number, because the mean of its divisors is an integer number (1481760).

Almost surely, 2^28259004 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 28259004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35562240).

28259004 is an abundant number, since it is smaller than the sum of its proper divisors (42865476).

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

28259004 is a wasteful number, since it uses less digits than its factorization.

28259004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090 (or 3088 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28259004 is about 5315.9198639558. The cubic root of 28259004 is about 304.5923210348.

The spelling of 28259004 in words is "twenty-eight million, two hundred fifty-nine thousand, four".