28933548 has 96 divisors (see below), whose sum is σ = 80607744. Its totient is φ = 7907328.

The previous prime is 28933547. The next prime is 28933559. The reversal of 28933548 is 84533982.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (28933543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298236 + ... + 298332.

It is an arithmetic number, because the mean of its divisors is an integer number (839664).

Almost surely, 2^28933548 is an apocalyptic number.

28933548 is a gapful number since it is divisible by the number (28) 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 28933548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40303872).

28933548 is an abundant number, since it is smaller than the sum of its proper divisors (51674196).

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

28933548 is a wasteful number, since it uses less digits than its factorization.

28933548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 229 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 28933548 is about 5378.9913552635. The cubic root of 28933548 is about 306.9968345934.

It can be divided in two parts, 2893 and 3548, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 28933548 in words is "twenty-eight million, nine hundred thirty-three thousand, five hundred forty-eight".