28145093 has 8 divisors (see below), whose sum is σ = 28828800. Its totient is φ = 27469728.

The previous prime is 28145087. The next prime is 28145101. The reversal of 28145093 is 39054182.

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 28145093 - 2¹² = 28140997 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 (28145003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5030 + ... + 9032.

It is an arithmetic number, because the mean of its divisors is an integer number (3603600).

Almost surely, 2^28145093 is an apocalyptic number.

It is an amenable number.

28145093 is a deficient number, since it is larger than the sum of its proper divisors (683707).

28145093 is an equidigital number, since it uses as much as digits as its factorization.

28145093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 28145093 is about 5305.1949068814. The cubic root of 28145093 is about 304.1825030932.

It can be divided in two parts, 28 and 145093, that multiplied together give a palindrome (4062604).

The spelling of 28145093 in words is "twenty-eight million, one hundred forty-five thousand, ninety-three".