28901593 has 16 divisors (see below), whose sum is σ = 34871040. Its totient is φ = 23417856.

The previous prime is 28901591. The next prime is 28901599. The reversal of 28901593 is 39510982.

It is not a de Polignac number, because 28901593 - 2¹ = 28901591 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28901591) 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, 13321 + ... + 15337.

It is an arithmetic number, because the mean of its divisors is an integer number (2179440).

Almost surely, 2^28901593 is an apocalyptic number.

28901593 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28901593 is a deficient number, since it is larger than the sum of its proper divisors (5969447).

28901593 is a wasteful number, since it uses less digits than its factorization.

28901593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 28901593 is about 5376.0201822538. The cubic root of 28901593 is about 306.8837744002.

The spelling of 28901593 in words is "twenty-eight million, nine hundred one thousand, five hundred ninety-three".