28409301 has 24 divisors (see below), whose sum is σ = 43445376. Its totient is φ = 17851680.

The previous prime is 28409287. The next prime is 28409333. The reversal of 28409301 is 10390482.

It is not a de Polignac number, because 28409301 - 2²² = 24214997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28409341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13731 + ... + 15663.

It is an arithmetic number, because the mean of its divisors is an integer number (1810224).

Almost surely, 2^28409301 is an apocalyptic number.

It is an amenable number.

28409301 is a deficient number, since it is larger than the sum of its proper divisors (15036075).

28409301 is a wasteful number, since it uses less digits than its factorization.

28409301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033 (or 2030 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28409301 is about 5330.0376171280. The cubic root of 28409301 is about 305.1313632830.

Adding to 28409301 its reverse (10390482), we get a palindrome (38799783).

The spelling of 28409301 in words is "twenty-eight million, four hundred nine thousand, three hundred one".