28748345 has 8 divisors (see below), whose sum is σ = 34526976. Its totient is φ = 22979376.

The previous prime is 28748341. The next prime is 28748347. The reversal of 28748345 is 54384782.

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 28748345 - 2² = 28748341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28748341) 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, 9374 + ... + 12056.

It is an arithmetic number, because the mean of its divisors is an integer number (4315872).

Almost surely, 2^28748345 is an apocalyptic number.

It is an amenable number.

28748345 is a deficient number, since it is larger than the sum of its proper divisors (5778631).

28748345 is a wasteful number, since it uses less digits than its factorization.

28748345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831.

The product of its digits is 215040, while the sum is 41.

The square root of 28748345 is about 5361.7483156150. The cubic root of 28748345 is about 306.3404053518.

The spelling of 28748345 in words is "twenty-eight million, seven hundred forty-eight thousand, three hundred forty-five".