28430241 has 20 divisors (see below), whose sum is σ = 44233392. Its totient is φ = 16241736.

The previous prime is 28430219. The next prime is 28430263. The reversal of 28430241 is 14203482.

It is an interprime number because it is at equal distance from previous prime (28430219) and next prime (28430263).

It is not a de Polignac number, because 28430241 - 2¹⁰ = 28429217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28430201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5230 + ... + 9176.

Almost surely, 2^28430241 is an apocalyptic number.

28430241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28430241 is a deficient number, since it is larger than the sum of its proper divisors (15803151).

28430241 is an frugal number, since it uses more digits than its factorization.

28430241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978 (or 3957 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 28430241 is about 5332.0015941483. The cubic root of 28430241 is about 305.2063138721.

The spelling of 28430241 in words is "twenty-eight million, four hundred thirty thousand, two hundred forty-one".