28590912 has 126 divisors (see below), whose sum is σ = 95424498. Its totient is φ = 8160768.

The previous prime is 28590911. The next prime is 28590929. The reversal of 28590912 is 21909582.

It can be written as a sum of positive squares in only one way, i.e., 14930496 + 13660416 = 3864^2 + 3696^2 .

It is a tau number, because it is divible by the number of its divisors (126).

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 (28590911) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 27718 + ... + 28730.

Almost surely, 2^28590912 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 28590912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47712249).

28590912 is an abundant number, since it is smaller than the sum of its proper divisors (66833586).

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

28590912 is a wasteful number, since it uses less digits than its factorization.

28590912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 28590912 is about 5347.0470355141. The cubic root of 28590912 is about 305.7801830255.

The spelling of 28590912 in words is "twenty-eight million, five hundred ninety thousand, nine hundred twelve".