28348489 has 8 divisors (see below), whose sum is σ = 31856832. Its totient is φ = 25029840.

The previous prime is 28348487. The next prime is 28348499. The reversal of 28348489 is 98484382.

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 28348489 - 2¹ = 28348487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28348487) 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, 47107 + ... + 47704.

It is an arithmetic number, because the mean of its divisors is an integer number (3982104).

Almost surely, 2^28348489 is an apocalyptic number.

It is an amenable number.

28348489 is a deficient number, since it is larger than the sum of its proper divisors (3508343).

28348489 is a wasteful number, since it uses less digits than its factorization.

28348489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94847.

The product of its digits is 442368, while the sum is 46.

The square root of 28348489 is about 5324.3299108902. The cubic root of 28348489 is about 304.9134897528.

The spelling of 28348489 in words is "twenty-eight million, three hundred forty-eight thousand, four hundred eighty-nine".