28712301 has 4 divisors (see below), whose sum is σ = 38283072. Its totient is φ = 19141532.

The previous prime is 28712279. The next prime is 28712311. The reversal of 28712301 is 10321782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28712301 - 2⁶ = 28712237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28712311) 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, 4785381 + ... + 4785386.

It is an arithmetic number, because the mean of its divisors is an integer number (9570768).

Almost surely, 2^28712301 is an apocalyptic number.

It is an amenable number.

28712301 is a deficient number, since it is larger than the sum of its proper divisors (9570771).

28712301 is an equidigital number, since it uses as much as digits as its factorization.

28712301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570770.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 28712301 is about 5358.3860443234. The cubic root of 28712301 is about 306.2123243393.

The spelling of 28712301 in words is "twenty-eight million, seven hundred twelve thousand, three hundred one".