28423339 has 8 divisors (see below), whose sum is σ = 32541408. Its totient is φ = 24319680.

The previous prime is 28423333. The next prime is 28423349. The reversal of 28423339 is 93332482.

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

It is not a de Polignac number, because 28423339 - 2¹³ = 28415147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28423333) 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, 1029 + ... + 7609.

It is an arithmetic number, because the mean of its divisors is an integer number (4067676).

Almost surely, 2^28423339 is an apocalyptic number.

28423339 is a deficient number, since it is larger than the sum of its proper divisors (4118069).

28423339 is an equidigital number, since it uses as much as digits as its factorization.

28423339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7205.

The product of its digits is 31104, while the sum is 34.

The square root of 28423339 is about 5331.3543307494. The cubic root of 28423339 is about 305.1816135953.

The spelling of 28423339 in words is "twenty-eight million, four hundred twenty-three thousand, three hundred thirty-nine".