27889245 has 64 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 13815360.

The previous prime is 27889237. The next prime is 27889249. The reversal of 27889245 is 54298872.

It is not a de Polignac number, because 27889245 - 2³ = 27889237 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 27889245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27889249) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 212830 + ... + 212960.

It is an arithmetic number, because the mean of its divisors is an integer number (831600).

Almost surely, 2^27889245 is an apocalyptic number.

It is an amenable number.

27889245 is a deficient number, since it is larger than the sum of its proper divisors (25333155).

27889245 is a wasteful number, since it uses less digits than its factorization.

27889245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 241 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 27889245 is about 5281.0268887784. The cubic root of 27889245 is about 303.2579902505.

The spelling of 27889245 in words is "twenty-seven million, eight hundred eighty-nine thousand, two hundred forty-five".