20938207 has 2 divisors, whose sum is σ = 20938208. Its totient is φ = 20938206.

The previous prime is 20938201. The next prime is 20938213. The reversal of 20938207 is 70283902.

It is a balanced prime because it is at equal distance from previous prime (20938201) and next prime (20938213).

It is a cyclic number.

It is not a de Polignac number, because 20938207 - 2³ = 20938199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20938201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10469103 + 10469104.

It is an arithmetic number, because the mean of its divisors is an integer number (10469104).

Almost surely, 2^20938207 is an apocalyptic number.

20938207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20938207 is an equidigital number, since it uses as much as digits as its factorization.

20938207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20938207 is about 4575.8285588514. The cubic root of 20938207 is about 275.6215451119.

It can be divided in two parts, 209 and 38207, that added together give a 4-th power (38416 = 14⁴).

The spelling of 20938207 in words is "twenty million, nine hundred thirty-eight thousand, two hundred seven".