28041983 has 4 divisors (see below), whose sum is σ = 28131888. Its totient is φ = 27952080.

The previous prime is 28041953. The next prime is 28041997. The reversal of 28041983 is 38914082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38914082 = 2 ⋅19457041.

It is a cyclic number.

It is not a de Polignac number, because 28041983 - 2¹⁰ = 28040959 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 (28041913) 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, 44483 + ... + 45108.

It is an arithmetic number, because the mean of its divisors is an integer number (7032972).

Almost surely, 2^28041983 is an apocalyptic number.

28041983 is a deficient number, since it is larger than the sum of its proper divisors (89905).

28041983 is an equidigital number, since it uses as much as digits as its factorization.

28041983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89904.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28041983 is about 5295.4681568300. The cubic root of 28041983 is about 303.8105893912.

The spelling of 28041983 in words is "twenty-eight million, forty-one thousand, nine hundred eighty-three".