28364279 has 8 divisors (see below), whose sum is σ = 30127968. Its totient is φ = 26611200.

The previous prime is 28364263. The next prime is 28364327. The reversal of 28364279 is 97246382.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28364279 - 2⁴ = 28364263 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 (28364879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3254 + ... + 8204.

It is an arithmetic number, because the mean of its divisors is an integer number (3765996).

Almost surely, 2^28364279 is an apocalyptic number.

28364279 is a deficient number, since it is larger than the sum of its proper divisors (1763689).

28364279 is a wasteful number, since it uses less digits than its factorization.

28364279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305.

The product of its digits is 145152, while the sum is 41.

The square root of 28364279 is about 5325.8125201700. The cubic root of 28364279 is about 304.9700911279.

The spelling of 28364279 in words is "twenty-eight million, three hundred sixty-four thousand, two hundred seventy-nine".