28716357 has 4 divisors (see below), whose sum is σ = 38288480. Its totient is φ = 19144236.

The previous prime is 28716287. The next prime is 28716431. The reversal of 28716357 is 75361782.

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 not a de Polignac number, because 28716357 - 2⁸ = 28716101 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 (28796357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4786057 + ... + 4786062.

It is an arithmetic number, because the mean of its divisors is an integer number (9572120).

Almost surely, 2^28716357 is an apocalyptic number.

It is an amenable number.

28716357 is a deficient number, since it is larger than the sum of its proper divisors (9572123).

28716357 is an equidigital number, since it uses as much as digits as its factorization.

28716357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9572122.

The product of its digits is 70560, while the sum is 39.

The square root of 28716357 is about 5358.7645031294. The cubic root of 28716357 is about 306.2267425348.

The spelling of 28716357 in words is "twenty-eight million, seven hundred sixteen thousand, three hundred fifty-seven".