27224021 has 16 divisors (see below), whose sum is σ = 31648320. Its totient is φ = 23143680.

The previous prime is 27224003. The next prime is 27224039. The reversal of 27224021 is 12042272.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27224003) and next prime (27224039).

It is a cyclic number.

It is not a de Polignac number, because 27224021 - 2¹⁰ = 27222997 is a prime.

It is a super-2 number, since 2×27224021² = 1482294638816882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27223984 and 27224002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27224081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36470 + ... + 37208.

It is an arithmetic number, because the mean of its divisors is an integer number (1978020).

Almost surely, 2^27224021 is an apocalyptic number.

It is an amenable number.

27224021 is a deficient number, since it is larger than the sum of its proper divisors (4424299).

27224021 is a wasteful number, since it uses less digits than its factorization.

27224021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

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

The square root of 27224021 is about 5217.6643241972. The cubic root of 27224021 is about 300.8274232121.

Adding to 27224021 its reverse (12042272), we get a palindrome (39266293).

The spelling of 27224021 in words is "twenty-seven million, two hundred twenty-four thousand, twenty-one".