28533484 has 30 divisors (see below), whose sum is σ = 58272004. Its totient is φ = 12224520.

The previous prime is 28533469. The next prime is 28533509. The reversal of 28533484 is 48433582.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8119 + ... + 11089.

Almost surely, 2^28533484 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 28533484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29136002).

28533484 is an abundant number, since it is smaller than the sum of its proper divisors (29738520).

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

28533484 is an equidigital number, since it uses as much as digits as its factorization.

28533484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003 (or 2980 counting only the distinct ones).

The product of its digits is 92160, while the sum is 37.

The square root of 28533484 is about 5341.6742693654. The cubic root of 28533484 is about 305.5753147234.

The spelling of 28533484 in words is "twenty-eight million, five hundred thirty-three thousand, four hundred eighty-four".