27455985 has 24 divisors (see below), whose sum is σ = 48170304. Its totient is φ = 14464800.

The previous prime is 27455977. The next prime is 27455999. The reversal of 27455985 is 58955472.

It is not a de Polignac number, because 27455985 - 2³ = 27455977 is a prime.

It is a super-2 number, since 2×27455985² = 1507662224640450, which contains 22 as substring.

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 27455985.

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, 60 + ... + 7410.

It is an arithmetic number, because the mean of its divisors is an integer number (2007096).

Almost surely, 2^27455985 is an apocalyptic number.

It is an amenable number.

27455985 is a deficient number, since it is larger than the sum of its proper divisors (20714319).

27455985 is a wasteful number, since it uses less digits than its factorization.

27455985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7445 (or 7442 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 27455985 is about 5239.8458946805. The cubic root of 27455985 is about 301.6794143482.

The spelling of 27455985 in words is "twenty-seven million, four hundred fifty-five thousand, nine hundred eighty-five".