28580605 has 16 divisors (see below), whose sum is σ = 36946944. Its totient is φ = 21162240.

The previous prime is 28580593. The next prime is 28580611. The reversal of 28580605 is 50608582.

It is not a de Polignac number, because 28580605 - 2¹³ = 28572413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444 + ... + 7573.

It is an arithmetic number, because the mean of its divisors is an integer number (2309184).

Almost surely, 2^28580605 is an apocalyptic number.

It is an amenable number.

28580605 is a deficient number, since it is larger than the sum of its proper divisors (8366339).

28580605 is a wasteful number, since it uses less digits than its factorization.

28580605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8076.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 28580605 is about 5346.0831456310. The cubic root of 28580605 is about 305.7434341086.

The spelling of 28580605 in words is "twenty-eight million, five hundred eighty thousand, six hundred five".