28533042 has 48 divisors (see below), whose sum is σ = 65370240. Its totient is φ = 8979936.

The previous prime is 28533017. The next prime is 28533047. The reversal of 28533042 is 24033582.

It is a super-4 number, since 4×28533042⁴ (a number of 31 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28532997 and 28533015.

It is not an unprimeable number, because it can be changed into a prime (28533047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23953 + ... + 25115.

It is an arithmetic number, because the mean of its divisors is an integer number (1361880).

Almost surely, 2^28533042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28533042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32685120).

28533042 is an abundant number, since it is smaller than the sum of its proper divisors (36837198).

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

28533042 is a wasteful number, since it uses less digits than its factorization.

28533042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1244 counting only the distinct ones).

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

The square root of 28533042 is about 5341.6328964091. The cubic root of 28533042 is about 305.5737368698.

The spelling of 28533042 in words is "twenty-eight million, five hundred thirty-three thousand, forty-two".