28108465 has 16 divisors (see below), whose sum is σ = 42053760. Its totient is φ = 17521920.

The previous prime is 28108447. The next prime is 28108477. The reversal of 28108465 is 56480182.

It is not a de Polignac number, because 28108465 - 2¹⁹ = 27584177 is a prime.

It is a super-3 number, since 3×28108465³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28108465.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36120 + ... + 36889.

It is an arithmetic number, because the mean of its divisors is an integer number (2628360).

Almost surely, 2^28108465 is an apocalyptic number.

It is an amenable number.

28108465 is a deficient number, since it is larger than the sum of its proper divisors (13945295).

28108465 is a wasteful number, since it uses less digits than its factorization.

28108465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73032.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28108465 is about 5301.7416949527. The cubic root of 28108465 is about 304.0504915268.

The spelling of 28108465 in words is "twenty-eight million, one hundred eight thousand, four hundred sixty-five".