28072301 has 8 divisors (see below), whose sum is σ = 28882560. Its totient is φ = 27271008.

The previous prime is 28072279. The next prime is 28072309. The reversal of 28072301 is 10327082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28072301 - 2¹⁸ = 27810157 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 (28072309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4385 + ... + 8681.

It is an arithmetic number, because the mean of its divisors is an integer number (3610320).

Almost surely, 2^28072301 is an apocalyptic number.

It is an amenable number.

28072301 is a deficient number, since it is larger than the sum of its proper divisors (810259).

28072301 is a wasteful number, since it uses less digits than its factorization.

28072301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 28072301 is about 5298.3300199214. The cubic root of 28072301 is about 303.9200397100.

Adding to 28072301 its reverse (10327082), we get a palindrome (38399383).

The spelling of 28072301 in words is "twenty-eight million, seventy-two thousand, three hundred one".