28533024 has 72 divisors (see below), whose sum is σ = 87393852. Its totient is φ = 8778240.

The previous prime is 28533017. The next prime is 28533047. The reversal of 28533024 is 42033582.

It can be written as a sum of positive squares in 2 ways, for example, as 28515600 + 17424 = 5340^2 + 132^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67 + ... + 7554.

Almost surely, 2^28533024 is an apocalyptic number.

28533024 is a gapful number since it is divisible by the number (24) 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 28533024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43696926).

28533024 is an abundant number, since it is smaller than the sum of its proper divisors (58860828).

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

28533024 is a wasteful number, since it uses less digits than its factorization.

28533024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650 (or 7639 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 28533024 is about 5341.6312115308. The cubic root of 28533024 is about 305.5736726130.

The spelling of 28533024 in words is "twenty-eight million, five hundred thirty-three thousand, twenty-four".