27232421 has 6 divisors (see below), whose sum is σ = 28204722. Its totient is φ = 26292560.

The previous prime is 27232417. The next prime is 27232423. The reversal of 27232421 is 12423272.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5712100 + 21520321 = 2390^2 + 4639^2 .

It is not a de Polignac number, because 27232421 - 2² = 27232417 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 (27232423) 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 5 ways as a sum of consecutive naturals, for example, 15350 + ... + 17031.

It is an arithmetic number, because the mean of its divisors is an integer number (4700787).

Almost surely, 2^27232421 is an apocalyptic number.

It is an amenable number.

27232421 is a deficient number, since it is larger than the sum of its proper divisors (972301).

27232421 is an equidigital number, since it uses as much as digits as its factorization.

27232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32439 (or 32410 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 27232421 is about 5218.4692199916. The cubic root of 27232421 is about 300.8583602352.

Adding to 27232421 its reverse (12423272), we get a palindrome (39655693).

The spelling of 27232421 in words is "twenty-seven million, two hundred thirty-two thousand, four hundred twenty-one".