28342765 has 8 divisors (see below), whose sum is σ = 37103328. Its totient is φ = 20612880.

The previous prime is 28342759. The next prime is 28342781. The reversal of 28342765 is 56724382.

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

It is not a de Polignac number, because 28342765 - 2⁷ = 28342637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257607 + ... + 257716.

It is an arithmetic number, because the mean of its divisors is an integer number (4637916).

Almost surely, 2^28342765 is an apocalyptic number.

It is an amenable number.

28342765 is a deficient number, since it is larger than the sum of its proper divisors (8760563).

28342765 is a wasteful number, since it uses less digits than its factorization.

28342765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515339.

The product of its digits is 80640, while the sum is 37.

The square root of 28342765 is about 5323.7923513225. The cubic root of 28342765 is about 304.8929661158.

The spelling of 28342765 in words is "twenty-eight million, three hundred forty-two thousand, seven hundred sixty-five".