28525932 has 60 divisors (see below), whose sum is σ = 78974280. Its totient is φ = 8947584.

The previous prime is 28525909. The next prime is 28525933. The reversal of 28525932 is 23952582.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28525933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2919 + ... + 8097.

It is an arithmetic number, because the mean of its divisors is an integer number (1316238).

Almost surely, 2^28525932 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 28525932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39487140).

28525932 is an abundant number, since it is smaller than the sum of its proper divisors (50448348).

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

28525932 is a wasteful number, since it uses less digits than its factorization.

28525932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212 (or 5201 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 28525932 is about 5340.9673281158. The cubic root of 28525932 is about 305.5483533191.

The spelling of 28525932 in words is "twenty-eight million, five hundred twenty-five thousand, nine hundred thirty-two".