28416193 has 4 divisors (see below), whose sum is σ = 30602068. Its totient is φ = 26230320.

The previous prime is 28416173. The next prime is 28416203. The reversal of 28416193 is 39161482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39161482 = 2 ⋅19580741.

It can be written as a sum of positive squares in 2 ways, for example, as 12159169 + 16257024 = 3487^2 + 4032^2 .

It is a cyclic number.

It is not a de Polignac number, because 28416193 - 2¹³ = 28408001 is a prime.

It is a super-2 number, since 2×28416193² = 1614960049226498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28416133) 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 3 ways as a sum of consecutive naturals, for example, 1092918 + ... + 1092943.

It is an arithmetic number, because the mean of its divisors is an integer number (7650517).

Almost surely, 2^28416193 is an apocalyptic number.

It is an amenable number.

28416193 is a deficient number, since it is larger than the sum of its proper divisors (2185875).

28416193 is a wasteful number, since it uses less digits than its factorization.

28416193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185874.

The product of its digits is 10368, while the sum is 34.

The square root of 28416193 is about 5330.6841024394. The cubic root of 28416193 is about 305.1560358990.

The spelling of 28416193 in words is "twenty-eight million, four hundred sixteen thousand, one hundred ninety-three".