27985401 has 12 divisors (see below), whose sum is σ = 40720212. Its totient is φ = 18519936.

The previous prime is 27985393. The next prime is 27985421. The reversal of 27985401 is 10458972.

27985401 is a `hidden beast` number, since 27 + 98 + 540 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5517801 + 22467600 = 2349^2 + 4740^2 .

It is not a de Polignac number, because 27985401 - 2³ = 27985393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27985421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10116 + ... + 12581.

It is an arithmetic number, because the mean of its divisors is an integer number (3393351).

Almost surely, 2^27985401 is an apocalyptic number.

It is an amenable number.

27985401 is a deficient number, since it is larger than the sum of its proper divisors (12734811).

27985401 is a wasteful number, since it uses less digits than its factorization.

27985401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22840 (or 22837 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 27985401 is about 5290.1229664347. The cubic root of 27985401 is about 303.6061128194.

The spelling of 27985401 in words is "twenty-seven million, nine hundred eighty-five thousand, four hundred one".