28361479 has 4 divisors (see below), whose sum is σ = 28376920. Its totient is φ = 28346040.

The previous prime is 28361453. The next prime is 28361483. The reversal of 28361479 is 97416382.

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 28361479 - 2¹¹ = 28359431 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 (28368479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524 + ... + 8785.

It is an arithmetic number, because the mean of its divisors is an integer number (7094230).

Almost surely, 2^28361479 is an apocalyptic number.

28361479 is a deficient number, since it is larger than the sum of its proper divisors (15441).

28361479 is a wasteful number, since it uses less digits than its factorization.

28361479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15440.

The product of its digits is 72576, while the sum is 40.

The square root of 28361479 is about 5325.5496429946. The cubic root of 28361479 is about 304.9600556844.

The spelling of 28361479 in words is "twenty-eight million, three hundred sixty-one thousand, four hundred seventy-nine".