28004841 has 12 divisors (see below), whose sum is σ = 42580720. Its totient is φ = 17687160.

The previous prime is 28004839. The next prime is 28004849. The reversal of 28004841 is 14840082.

It is not a de Polignac number, because 28004841 - 2¹ = 28004839 is a prime.

It is a super-2 number, since 2×28004841² = 1568542238870562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28004849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81715 + ... + 82056.

Almost surely, 2^28004841 is an apocalyptic number.

It is an amenable number.

28004841 is a deficient number, since it is larger than the sum of its proper divisors (14575879).

28004841 is a wasteful number, since it uses less digits than its factorization.

28004841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163796 (or 163793 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 28004841 is about 5291.9600338627. The cubic root of 28004841 is about 303.6763963306.

The spelling of 28004841 in words is "twenty-eight million, four thousand, eight hundred forty-one".