27923985 has 24 divisors (see below), whose sum is σ = 49530624. Its totient is φ = 14545440.

The previous prime is 27923983. The next prime is 27923999. The reversal of 27923985 is 58932972.

It is not a de Polignac number, because 27923985 - 2¹ = 27923983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 27923985.

It is not an unprimeable number, because it can be changed into a prime (27923981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5281 + ... + 9150.

It is an arithmetic number, because the mean of its divisors is an integer number (2063776).

Almost surely, 2^27923985 is an apocalyptic number.

It is an amenable number.

27923985 is a deficient number, since it is larger than the sum of its proper divisors (21606639).

27923985 is a wasteful number, since it uses less digits than its factorization.

27923985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14485 (or 14482 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 27923985 is about 5284.3149981809. The cubic root of 27923985 is about 303.3838549133.

The spelling of 27923985 in words is "twenty-seven million, nine hundred twenty-three thousand, nine hundred eighty-five".