20732241 has 4 divisors (see below), whose sum is σ = 27642992. Its totient is φ = 13821492.

The previous prime is 20732233. The next prime is 20732263. The reversal of 20732241 is 14223702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20732241 - 2³ = 20732233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20732221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3455371 + ... + 3455376.

It is an arithmetic number, because the mean of its divisors is an integer number (6910748).

Almost surely, 2^20732241 is an apocalyptic number.

It is an amenable number.

20732241 is a deficient number, since it is larger than the sum of its proper divisors (6910751).

20732241 is an equidigital number, since it uses as much as digits as its factorization.

20732241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6910750.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20732241 is about 4553.2670688199. The cubic root of 20732241 is about 274.7148162032.

Adding to 20732241 its reverse (14223702), we get a palindrome (34955943).

The spelling of 20732241 in words is "twenty million, seven hundred thirty-two thousand, two hundred forty-one".