28525332 has 48 divisors (see below), whose sum is σ = 74962944. Its totient is φ = 8364000.

The previous prime is 28525331. The next prime is 28525333. The reversal of 28525332 is 23352582.

It is an interprime number because it is at equal distance from previous prime (28525331) and next prime (28525333).

It is a self number, because there is not a number n which added to its sum of digits gives 28525332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28525331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607 + ... + 7577.

It is an arithmetic number, because the mean of its divisors is an integer number (1561728).

Almost surely, 2^28525332 is an apocalyptic number.

28525332 is a gapful number since it is divisible by the number (22) 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 28525332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37481472).

28525332 is an abundant number, since it is smaller than the sum of its proper divisors (46437612).

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

28525332 is a wasteful number, since it uses less digits than its factorization.

28525332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020 (or 7018 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 28525332 is about 5340.9111582201. The cubic root of 28525332 is about 305.5462110543.

The spelling of 28525332 in words is "twenty-eight million, five hundred twenty-five thousand, three hundred thirty-two".