28210079 has 4 divisors (see below), whose sum is σ = 29694840. Its totient is φ = 26725320.

The previous prime is 28210073. The next prime is 28210087. The reversal of 28210079 is 97001282.

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 28210079 - 2²⁰ = 27161503 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 (28210073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742352 + ... + 742389.

It is an arithmetic number, because the mean of its divisors is an integer number (7423710).

Almost surely, 2^28210079 is an apocalyptic number.

28210079 is a deficient number, since it is larger than the sum of its proper divisors (1484761).

28210079 is a wasteful number, since it uses less digits than its factorization.

28210079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484760.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 28210079 is about 5311.3161269124. The cubic root of 28210079 is about 304.4164385955.

The spelling of 28210079 in words is "twenty-eight million, two hundred ten thousand, seventy-nine".