28327845 has 32 divisors (see below), whose sum is σ = 55786752. Its totient is φ = 11953152.

The previous prime is 28327837. The next prime is 28327853. The reversal of 28327845 is 54872382.

It is an interprime number because it is at equal distance from previous prime (28327837) and next prime (28327853).

It is not a de Polignac number, because 28327845 - 2³ = 28327837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9012 + ... + 11741.

It is an arithmetic number, because the mean of its divisors is an integer number (1743336).

Almost surely, 2^28327845 is an apocalyptic number.

It is an amenable number.

28327845 is a deficient number, since it is larger than the sum of its proper divisors (27458907).

28327845 is a wasteful number, since it uses less digits than its factorization.

28327845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20781.

The product of its digits is 107520, while the sum is 39.

The square root of 28327845 is about 5322.3909101080. The cubic root of 28327845 is about 304.8394568515.

The spelling of 28327845 in words is "twenty-eight million, three hundred twenty-seven thousand, eight hundred forty-five".