20672241 has 8 divisors (see below), whose sum is σ = 28235424. Its totient is φ = 13445280.

The previous prime is 20672237. The next prime is 20672261. The reversal of 20672241 is 14227602.

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

It is not a de Polignac number, because 20672241 - 2² = 20672237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20672231) 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, 83911 + ... + 84156.

It is an arithmetic number, because the mean of its divisors is an integer number (3529428).

Almost surely, 2^20672241 is an apocalyptic number.

It is an amenable number.

20672241 is a deficient number, since it is larger than the sum of its proper divisors (7563183).

20672241 is a wasteful number, since it uses less digits than its factorization.

20672241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168111.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20672241 is about 4546.6736192518. The cubic root of 20672241 is about 274.4495479621.

Adding to 20672241 its reverse (14227602), we get a palindrome (34899843).

The spelling of 20672241 in words is "twenty million, six hundred seventy-two thousand, two hundred forty-one".