28070479 has 4 divisors (see below), whose sum is σ = 28110240. Its totient is φ = 28030720.

The previous prime is 28070459. The next prime is 28070491. The reversal of 28070479 is 97407082.

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 28070479 - 2¹¹ = 28068431 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 (28070459) 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, 18802 + ... + 20239.

It is an arithmetic number, because the mean of its divisors is an integer number (7027560).

Almost surely, 2^28070479 is an apocalyptic number.

28070479 is a deficient number, since it is larger than the sum of its proper divisors (39761).

28070479 is an equidigital number, since it uses as much as digits as its factorization.

28070479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39760.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 28070479 is about 5298.1580761619. The cubic root of 28070479 is about 303.9134643756.

The spelling of 28070479 in words is "twenty-eight million, seventy thousand, four hundred seventy-nine".