28900539 has 12 divisors (see below), whose sum is σ = 43942600. Its totient is φ = 18252864.

The previous prime is 28900537. The next prime is 28900549. The reversal of 28900539 is 93500982.

It is not a de Polignac number, because 28900539 - 2¹ = 28900537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28900537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84334 + ... + 84675.

Almost surely, 2^28900539 is an apocalyptic number.

28900539 is a deficient number, since it is larger than the sum of its proper divisors (15042061).

28900539 is a wasteful number, since it uses less digits than its factorization.

28900539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169034 (or 169031 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 28900539 is about 5375.9221534542. The cubic root of 28900539 is about 306.8800438166.

The spelling of 28900539 in words is "twenty-eight million, nine hundred thousand, five hundred thirty-nine".