27204221 has 8 divisors (see below), whose sum is σ = 29795904. Its totient is φ = 24632320.

The previous prime is 27204217. The next prime is 27204223. The reversal of 27204221 is 12240272.

It is a happy number.

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 27204221 - 2² = 27204217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27204193 and 27204202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27204223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1985 + ... + 7638.

It is an arithmetic number, because the mean of its divisors is an integer number (3724488).

Almost surely, 2^27204221 is an apocalyptic number.

It is an amenable number.

27204221 is a deficient number, since it is larger than the sum of its proper divisors (2591683).

27204221 is a wasteful number, since it uses less digits than its factorization.

27204221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9891.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 27204221 is about 5215.7665783660. The cubic root of 27204221 is about 300.7544750415.

Adding to 27204221 its reverse (12240272), we get a palindrome (39444493).

The spelling of 27204221 in words is "twenty-seven million, two hundred four thousand, two hundred twenty-one".