28827479 has 4 divisors (see below), whose sum is σ = 29821560. Its totient is φ = 27833400.

The previous prime is 28827473. The next prime is 28827499. The reversal of 28827479 is 97472882.

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 28827479 - 2¹² = 28823383 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 (28827473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496997 + ... + 497054.

It is an arithmetic number, because the mean of its divisors is an integer number (7455390).

Almost surely, 2^28827479 is an apocalyptic number.

28827479 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28827479 is a deficient number, since it is larger than the sum of its proper divisors (994081).

28827479 is an equidigital number, since it uses as much as digits as its factorization.

28827479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994080.

The product of its digits is 451584, while the sum is 47.

The square root of 28827479 is about 5369.1227402621. The cubic root of 28827479 is about 306.6212300095.

The spelling of 28827479 in words is "twenty-eight million, eight hundred twenty-seven thousand, four hundred seventy-nine".