28760071 has 4 divisors (see below), whose sum is σ = 28783072. Its totient is φ = 28737072.

The previous prime is 28760059. The next prime is 28760089. The reversal of 28760071 is 17006782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28760071 - 2⁷ = 28759943 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 (28760371) 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, 9510 + ... + 12163.

It is an arithmetic number, because the mean of its divisors is an integer number (7195768).

Almost surely, 2^28760071 is an apocalyptic number.

28760071 is a deficient number, since it is larger than the sum of its proper divisors (23001).

28760071 is a wasteful number, since it uses less digits than its factorization.

28760071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23000.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 28760071 is about 5362.8416907457. The cubic root of 28760071 is about 306.3820501759.

The spelling of 28760071 in words is "twenty-eight million, seven hundred sixty thousand, seventy-one".