28162845 has 24 divisors (see below), whose sum is σ = 51386400. Its totient is φ = 14229216.

The previous prime is 28162819. The next prime is 28162909. The reversal of 28162845 is 54826182.

28162845 is a `hidden beast` number, since 28 + 1 + 628 + 4 + 5 = 666.

It is not a de Polignac number, because 28162845 - 2⁶ = 28162781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15615 + ... + 17324.

It is an arithmetic number, because the mean of its divisors is an integer number (2141100).

Almost surely, 2^28162845 is an apocalyptic number.

It is an amenable number.

28162845 is a deficient number, since it is larger than the sum of its proper divisors (23223555).

28162845 is a wasteful number, since it uses less digits than its factorization.

28162845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32969 (or 32966 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 28162845 is about 5306.8677202282. The cubic root of 28162845 is about 304.2464421596.

The spelling of 28162845 in words is "twenty-eight million, one hundred sixty-two thousand, eight hundred forty-five".