27898645 has 8 divisors (see below), whose sum is σ = 33791904. Its totient is φ = 22109904.

The previous prime is 27898643. The next prime is 27898657. The reversal of 27898645 is 54689872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27898645 - 2¹ = 27898643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27898643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25539 + ... + 26608.

It is an arithmetic number, because the mean of its divisors is an integer number (4223988).

Almost surely, 2^27898645 is an apocalyptic number.

It is an amenable number.

27898645 is a deficient number, since it is larger than the sum of its proper divisors (5893259).

27898645 is a wasteful number, since it uses less digits than its factorization.

27898645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52259.

The product of its digits is 967680, while the sum is 49.

The square root of 27898645 is about 5281.9167922261. The cubic root of 27898645 is about 303.2920572048.

The spelling of 27898645 in words is "twenty-seven million, eight hundred ninety-eight thousand, six hundred forty-five".