28542113 has 8 divisors (see below), whose sum is σ = 29237760. Its totient is φ = 27850240.

The previous prime is 28542089. The next prime is 28542131. The reversal of 28542113 is 31124582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28542113 - 2¹² = 28538017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28542193) 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 7 ways as a sum of consecutive naturals, for example, 19553 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (3654720).

Almost surely, 2^28542113 is an apocalyptic number.

It is an amenable number.

28542113 is a deficient number, since it is larger than the sum of its proper divisors (695647).

28542113 is a wasteful number, since it uses less digits than its factorization.

28542113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887.

The product of its digits is 1920, while the sum is 26.

The square root of 28542113 is about 5342.4819138674. The cubic root of 28542113 is about 305.6061153042.

Adding to 28542113 its reverse (31124582), we get a palindrome (59666695).

The spelling of 28542113 in words is "twenty-eight million, five hundred forty-two thousand, one hundred thirteen".