28542536 has 64 divisors (see below), whose sum is σ = 61102080. Its totient is φ = 12386880.

The previous prime is 28542529. The next prime is 28542539. The reversal of 28542536 is 63524582.

It is a super-2 number, since 2×28542536² = 1629352722622592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28542496 and 28542505.

It is not an unprimeable number, because it can be changed into a prime (28542539) 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, 277061 + ... + 277163.

It is an arithmetic number, because the mean of its divisors is an integer number (954720).

Almost surely, 2^28542536 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 28542536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30551040).

28542536 is an abundant number, since it is smaller than the sum of its proper divisors (32559544).

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

28542536 is a wasteful number, since it uses less digits than its factorization.

28542536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 230 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 28542536 is about 5342.5215020625. The cubic root of 28542536 is about 305.6076250119.

The spelling of 28542536 in words is "twenty-eight million, five hundred forty-two thousand, five hundred thirty-six".