27428219 has 8 divisors (see below), whose sum is σ = 33757920. Its totient is φ = 21701376.

The previous prime is 27428209. The next prime is 27428227. The reversal of 27428219 is 91282472.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27428219 is a prime.

It is a super-3 number, since 3×27428219³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (27428209) 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, 150614 + ... + 150795.

It is an arithmetic number, because the mean of its divisors is an integer number (4219740).

Almost surely, 2^27428219 is an apocalyptic number.

27428219 is a deficient number, since it is larger than the sum of its proper divisors (6329701).

27428219 is a wasteful number, since it uses less digits than its factorization.

27428219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301429.

The product of its digits is 16128, while the sum is 35.

The square root of 27428219 is about 5237.1957190848. The cubic root of 27428219 is about 301.5776847876.

The spelling of 27428219 in words is "twenty-seven million, four hundred twenty-eight thousand, two hundred nineteen".