28118465 has 8 divisors (see below), whose sum is σ = 33966528. Its totient is φ = 22345200.

The previous prime is 28118411. The next prime is 28118471. The reversal of 28118465 is 56481182.

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

It is not a de Polignac number, because 28118465 - 2¹⁶ = 28052929 is a prime.

It is a Duffinian number.

It is a Curzon 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, 17867 + ... + 19376.

It is an arithmetic number, because the mean of its divisors is an integer number (4245816).

Almost surely, 2^28118465 is an apocalyptic number.

It is an amenable number.

28118465 is a deficient number, since it is larger than the sum of its proper divisors (5848063).

28118465 is a wasteful number, since it uses less digits than its factorization.

28118465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37399.

The product of its digits is 15360, while the sum is 35.

The square root of 28118465 is about 5302.6846973962. The cubic root of 28118465 is about 304.0865440637.

The spelling of 28118465 in words is "twenty-eight million, one hundred eighteen thousand, four hundred sixty-five".