20452207 has 8 divisors (see below), whose sum is σ = 21828096. Its totient is φ = 19095552.

The previous prime is 20452199. The next prime is 20452213. The reversal of 20452207 is 70225402.

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

It is a cyclic number.

It is not a de Polignac number, because 20452207 - 2³ = 20452199 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 (20452217) 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 7 ways as a sum of consecutive naturals, for example, 2578 + ... + 6895.

It is an arithmetic number, because the mean of its divisors is an integer number (2728512).

Almost surely, 2^20452207 is an apocalyptic number.

20452207 is a deficient number, since it is larger than the sum of its proper divisors (1375889).

20452207 is a wasteful number, since it uses less digits than its factorization.

20452207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9617.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 20452207 is about 4522.4116353999. The cubic root of 20452207 is about 273.4723314780.

Adding to 20452207 its reverse (70225402), we get a palindrome (90677609).

The spelling of 20452207 in words is "twenty million, four hundred fifty-two thousand, two hundred seven".