28379829 has 4 divisors (see below), whose sum is σ = 37839776. Its totient is φ = 18919884.

The previous prime is 28379809. The next prime is 28379833. The reversal of 28379829 is 92897382.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28379829 - 2⁵ = 28379797 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 (28379809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4729969 + ... + 4729974.

It is an arithmetic number, because the mean of its divisors is an integer number (9459944).

Almost surely, 2^28379829 is an apocalyptic number.

It is an amenable number.

28379829 is a deficient number, since it is larger than the sum of its proper divisors (9459947).

28379829 is an equidigital number, since it uses as much as digits as its factorization.

28379829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9459946.

The product of its digits is 435456, while the sum is 48.

The square root of 28379829 is about 5327.2721912814. The cubic root of 28379829 is about 305.0258116649.

The spelling of 28379829 in words is "twenty-eight million, three hundred seventy-nine thousand, eight hundred twenty-nine".