20541207 has 8 divisors (see below), whose sum is σ = 27456880. Its totient is φ = 13659840.

The previous prime is 20541203. The next prime is 20541217. The reversal of 20541207 is 70214502.

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

It is not a de Polignac number, because 20541207 - 2² = 20541203 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 (20541203) 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, 7144 + ... + 9597.

It is an arithmetic number, because the mean of its divisors is an integer number (3432110).

Almost surely, 2^20541207 is an apocalyptic number.

20541207 is a deficient number, since it is larger than the sum of its proper divisors (6915673).

20541207 is a wasteful number, since it uses less digits than its factorization.

20541207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17153.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20541207 is about 4532.2408364958. The cubic root of 20541207 is about 273.8684389812.

Adding to 20541207 its reverse (70214502), we get a palindrome (90755709).

The spelling of 20541207 in words is "twenty million, five hundred forty-one thousand, two hundred seven".