28083049 has 4 divisors (see below), whose sum is σ = 29051460. Its totient is φ = 27114640.

The previous prime is 28083043. The next prime is 28083067. The reversal of 28083049 is 94038082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94038082 = 2 ⋅47019041.

It can be written as a sum of positive squares in 2 ways, for example, as 8369449 + 19713600 = 2893^2 + 4440^2 .

It is a cyclic number.

It is not a de Polignac number, because 28083049 - 2¹³ = 28074857 is a prime.

It is a super-2 number, since 2×28083049² = 1577315282272802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28083043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484162 + ... + 484219.

It is an arithmetic number, because the mean of its divisors is an integer number (7262865).

Almost surely, 2^28083049 is an apocalyptic number.

28083049 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28083049 is a deficient number, since it is larger than the sum of its proper divisors (968411).

28083049 is an equidigital number, since it uses as much as digits as its factorization.

28083049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968410.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 28083049 is about 5299.3442047106. The cubic root of 28083049 is about 303.9588218983.

The spelling of 28083049 in words is "twenty-eight million, eighty-three thousand, forty-nine".