28542877 has 4 divisors (see below), whose sum is σ = 31137696. Its totient is φ = 25948060.

The previous prime is 28542863. The next prime is 28542893. The reversal of 28542877 is 77824582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28542877 - 2¹⁹ = 28018589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28542277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297393 + ... + 1297414.

It is an arithmetic number, because the mean of its divisors is an integer number (7784424).

Almost surely, 2^28542877 is an apocalyptic number.

It is an amenable number.

28542877 is a deficient number, since it is larger than the sum of its proper divisors (2594819).

28542877 is a wasteful number, since it uses less digits than its factorization.

28542877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594818.

The product of its digits is 250880, while the sum is 43.

The square root of 28542877 is about 5342.5534157367. The cubic root of 28542877 is about 305.6088420468.

The spelling of 28542877 in words is "twenty-eight million, five hundred forty-two thousand, eight hundred seventy-seven".